CVE-2025-21631 (GCVE-0-2025-21631)

Vulnerability from cvelistv5 – Published: 2025-01-19 10:17 – Updated: 2025-11-03 20:58
VLAI?
Title
block, bfq: fix waker_bfqq UAF after bfq_split_bfqq()
Summary
In the Linux kernel, the following vulnerability has been resolved: block, bfq: fix waker_bfqq UAF after bfq_split_bfqq() Our syzkaller report a following UAF for v6.6: BUG: KASAN: slab-use-after-free in bfq_init_rq+0x175d/0x17a0 block/bfq-iosched.c:6958 Read of size 8 at addr ffff8881b57147d8 by task fsstress/232726 CPU: 2 PID: 232726 Comm: fsstress Not tainted 6.6.0-g3629d1885222 #39 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x91/0xf0 lib/dump_stack.c:106 print_address_description.constprop.0+0x66/0x300 mm/kasan/report.c:364 print_report+0x3e/0x70 mm/kasan/report.c:475 kasan_report+0xb8/0xf0 mm/kasan/report.c:588 hlist_add_head include/linux/list.h:1023 [inline] bfq_init_rq+0x175d/0x17a0 block/bfq-iosched.c:6958 bfq_insert_request.isra.0+0xe8/0xa20 block/bfq-iosched.c:6271 bfq_insert_requests+0x27f/0x390 block/bfq-iosched.c:6323 blk_mq_insert_request+0x290/0x8f0 block/blk-mq.c:2660 blk_mq_submit_bio+0x1021/0x15e0 block/blk-mq.c:3143 __submit_bio+0xa0/0x6b0 block/blk-core.c:639 __submit_bio_noacct_mq block/blk-core.c:718 [inline] submit_bio_noacct_nocheck+0x5b7/0x810 block/blk-core.c:747 submit_bio_noacct+0xca0/0x1990 block/blk-core.c:847 __ext4_read_bh fs/ext4/super.c:205 [inline] ext4_read_bh+0x15e/0x2e0 fs/ext4/super.c:230 __read_extent_tree_block+0x304/0x6f0 fs/ext4/extents.c:567 ext4_find_extent+0x479/0xd20 fs/ext4/extents.c:947 ext4_ext_map_blocks+0x1a3/0x2680 fs/ext4/extents.c:4182 ext4_map_blocks+0x929/0x15a0 fs/ext4/inode.c:660 ext4_iomap_begin_report+0x298/0x480 fs/ext4/inode.c:3569 iomap_iter+0x3dd/0x1010 fs/iomap/iter.c:91 iomap_fiemap+0x1f4/0x360 fs/iomap/fiemap.c:80 ext4_fiemap+0x181/0x210 fs/ext4/extents.c:5051 ioctl_fiemap.isra.0+0x1b4/0x290 fs/ioctl.c:220 do_vfs_ioctl+0x31c/0x11a0 fs/ioctl.c:811 __do_sys_ioctl fs/ioctl.c:869 [inline] __se_sys_ioctl+0xae/0x190 fs/ioctl.c:857 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x70/0x120 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x78/0xe2 Allocated by task 232719: kasan_save_stack+0x22/0x50 mm/kasan/common.c:45 kasan_set_track+0x25/0x30 mm/kasan/common.c:52 __kasan_slab_alloc+0x87/0x90 mm/kasan/common.c:328 kasan_slab_alloc include/linux/kasan.h:188 [inline] slab_post_alloc_hook mm/slab.h:768 [inline] slab_alloc_node mm/slub.c:3492 [inline] kmem_cache_alloc_node+0x1b8/0x6f0 mm/slub.c:3537 bfq_get_queue+0x215/0x1f00 block/bfq-iosched.c:5869 bfq_get_bfqq_handle_split+0x167/0x5f0 block/bfq-iosched.c:6776 bfq_init_rq+0x13a4/0x17a0 block/bfq-iosched.c:6938 bfq_insert_request.isra.0+0xe8/0xa20 block/bfq-iosched.c:6271 bfq_insert_requests+0x27f/0x390 block/bfq-iosched.c:6323 blk_mq_insert_request+0x290/0x8f0 block/blk-mq.c:2660 blk_mq_submit_bio+0x1021/0x15e0 block/blk-mq.c:3143 __submit_bio+0xa0/0x6b0 block/blk-core.c:639 __submit_bio_noacct_mq block/blk-core.c:718 [inline] submit_bio_noacct_nocheck+0x5b7/0x810 block/blk-core.c:747 submit_bio_noacct+0xca0/0x1990 block/blk-core.c:847 __ext4_read_bh fs/ext4/super.c:205 [inline] ext4_read_bh_nowait+0x15a/0x240 fs/ext4/super.c:217 ext4_read_bh_lock+0xac/0xd0 fs/ext4/super.c:242 ext4_bread_batch+0x268/0x500 fs/ext4/inode.c:958 __ext4_find_entry+0x448/0x10f0 fs/ext4/namei.c:1671 ext4_lookup_entry fs/ext4/namei.c:1774 [inline] ext4_lookup.part.0+0x359/0x6f0 fs/ext4/namei.c:1842 ext4_lookup+0x72/0x90 fs/ext4/namei.c:1839 __lookup_slow+0x257/0x480 fs/namei.c:1696 lookup_slow fs/namei.c:1713 [inline] walk_component+0x454/0x5c0 fs/namei.c:2004 link_path_walk.part.0+0x773/0xda0 fs/namei.c:2331 link_path_walk fs/namei.c:3826 [inline] path_openat+0x1b9/0x520 fs/namei.c:3826 do_filp_open+0x1b7/0x400 fs/namei.c:3857 do_sys_openat2+0x5dc/0x6e0 fs/open.c:1428 do_sys_open fs/open.c:1443 [inline] __do_sys_openat fs/open.c:1459 [inline] __se_sys_openat fs/open.c:1454 [inline] __x64_sys_openat+0x148/0x200 fs/open.c:1454 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_6 ---truncated---
Severity ?
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 63a07379fdb6c72450cb05294461c6016b8b7726 , < f587c1ac68956c4703857d650d9b1cd7bb2ac4d7 (git)
Affected: de0456460f2abf921e356ed2bd8da87a376680bd , < 2550149fcdf2934155ff625d76ad4e3d4b25bbc6 (git)
Affected: 0780451f03bf518bc032a7c584de8f92e2d39d7f , < be3eed59ac01f429ac10aaa46e26f653bcf581ab (git)
Affected: 1ba0403ac6447f2d63914fb760c44a3b19c44eaf , < bc2aeb35ff167e0c6b0cedf0c96a5c41e6cba1ed (git)
Affected: 1ba0403ac6447f2d63914fb760c44a3b19c44eaf , < fcede1f0a043ccefe9bc6ad57f12718e42f63f1d (git)
Affected: 0b8bda0ff17156cd3f60944527c9d8c9f99f1583 (git)
Affected: cae58d19121a70329cf971359e2518c93fec04fe (git)
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    Linux Linux Affected: 6.12
Unaffected: 0 , < 6.12 (semver)
Unaffected: 5.15.177 , ≤ 5.15.* (semver)
Unaffected: 6.1.125 , ≤ 6.1.* (semver)
Unaffected: 6.6.72 , ≤ 6.6.* (semver)
Unaffected: 6.12.10 , ≤ 6.12.* (semver)
Unaffected: 6.13 , ≤ * (original_commit_for_fix)
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nblock, bfq: fix waker_bfqq UAF after bfq_split_bfqq()\n\nOur syzkaller report a following UAF for v6.6:\n\nBUG: KASAN: slab-use-after-free in bfq_init_rq+0x175d/0x17a0 block/bfq-iosched.c:6958\nRead of size 8 at addr ffff8881b57147d8 by task fsstress/232726\n\nCPU: 2 PID: 232726 Comm: fsstress Not tainted 6.6.0-g3629d1885222 #39\nCall Trace:\n \u003cTASK\u003e\n __dump_stack lib/dump_stack.c:88 [inline]\n dump_stack_lvl+0x91/0xf0 lib/dump_stack.c:106\n print_address_description.constprop.0+0x66/0x300 mm/kasan/report.c:364\n print_report+0x3e/0x70 mm/kasan/report.c:475\n kasan_report+0xb8/0xf0 mm/kasan/report.c:588\n hlist_add_head include/linux/list.h:1023 [inline]\n bfq_init_rq+0x175d/0x17a0 block/bfq-iosched.c:6958\n bfq_insert_request.isra.0+0xe8/0xa20 block/bfq-iosched.c:6271\n bfq_insert_requests+0x27f/0x390 block/bfq-iosched.c:6323\n blk_mq_insert_request+0x290/0x8f0 block/blk-mq.c:2660\n blk_mq_submit_bio+0x1021/0x15e0 block/blk-mq.c:3143\n __submit_bio+0xa0/0x6b0 block/blk-core.c:639\n __submit_bio_noacct_mq block/blk-core.c:718 [inline]\n submit_bio_noacct_nocheck+0x5b7/0x810 block/blk-core.c:747\n submit_bio_noacct+0xca0/0x1990 block/blk-core.c:847\n __ext4_read_bh fs/ext4/super.c:205 [inline]\n ext4_read_bh+0x15e/0x2e0 fs/ext4/super.c:230\n __read_extent_tree_block+0x304/0x6f0 fs/ext4/extents.c:567\n ext4_find_extent+0x479/0xd20 fs/ext4/extents.c:947\n ext4_ext_map_blocks+0x1a3/0x2680 fs/ext4/extents.c:4182\n ext4_map_blocks+0x929/0x15a0 fs/ext4/inode.c:660\n ext4_iomap_begin_report+0x298/0x480 fs/ext4/inode.c:3569\n iomap_iter+0x3dd/0x1010 fs/iomap/iter.c:91\n iomap_fiemap+0x1f4/0x360 fs/iomap/fiemap.c:80\n ext4_fiemap+0x181/0x210 fs/ext4/extents.c:5051\n ioctl_fiemap.isra.0+0x1b4/0x290 fs/ioctl.c:220\n do_vfs_ioctl+0x31c/0x11a0 fs/ioctl.c:811\n __do_sys_ioctl fs/ioctl.c:869 [inline]\n __se_sys_ioctl+0xae/0x190 fs/ioctl.c:857\n do_syscall_x64 arch/x86/entry/common.c:51 [inline]\n do_syscall_64+0x70/0x120 arch/x86/entry/common.c:81\n entry_SYSCALL_64_after_hwframe+0x78/0xe2\n\nAllocated by task 232719:\n kasan_save_stack+0x22/0x50 mm/kasan/common.c:45\n kasan_set_track+0x25/0x30 mm/kasan/common.c:52\n __kasan_slab_alloc+0x87/0x90 mm/kasan/common.c:328\n kasan_slab_alloc include/linux/kasan.h:188 [inline]\n slab_post_alloc_hook mm/slab.h:768 [inline]\n slab_alloc_node mm/slub.c:3492 [inline]\n kmem_cache_alloc_node+0x1b8/0x6f0 mm/slub.c:3537\n bfq_get_queue+0x215/0x1f00 block/bfq-iosched.c:5869\n bfq_get_bfqq_handle_split+0x167/0x5f0 block/bfq-iosched.c:6776\n bfq_init_rq+0x13a4/0x17a0 block/bfq-iosched.c:6938\n bfq_insert_request.isra.0+0xe8/0xa20 block/bfq-iosched.c:6271\n bfq_insert_requests+0x27f/0x390 block/bfq-iosched.c:6323\n blk_mq_insert_request+0x290/0x8f0 block/blk-mq.c:2660\n blk_mq_submit_bio+0x1021/0x15e0 block/blk-mq.c:3143\n __submit_bio+0xa0/0x6b0 block/blk-core.c:639\n __submit_bio_noacct_mq block/blk-core.c:718 [inline]\n submit_bio_noacct_nocheck+0x5b7/0x810 block/blk-core.c:747\n submit_bio_noacct+0xca0/0x1990 block/blk-core.c:847\n __ext4_read_bh fs/ext4/super.c:205 [inline]\n ext4_read_bh_nowait+0x15a/0x240 fs/ext4/super.c:217\n ext4_read_bh_lock+0xac/0xd0 fs/ext4/super.c:242\n ext4_bread_batch+0x268/0x500 fs/ext4/inode.c:958\n __ext4_find_entry+0x448/0x10f0 fs/ext4/namei.c:1671\n ext4_lookup_entry fs/ext4/namei.c:1774 [inline]\n ext4_lookup.part.0+0x359/0x6f0 fs/ext4/namei.c:1842\n ext4_lookup+0x72/0x90 fs/ext4/namei.c:1839\n __lookup_slow+0x257/0x480 fs/namei.c:1696\n lookup_slow fs/namei.c:1713 [inline]\n walk_component+0x454/0x5c0 fs/namei.c:2004\n link_path_walk.part.0+0x773/0xda0 fs/namei.c:2331\n link_path_walk fs/namei.c:3826 [inline]\n path_openat+0x1b9/0x520 fs/namei.c:3826\n do_filp_open+0x1b7/0x400 fs/namei.c:3857\n do_sys_openat2+0x5dc/0x6e0 fs/open.c:1428\n do_sys_open fs/open.c:1443 [inline]\n __do_sys_openat fs/open.c:1459 [inline]\n __se_sys_openat fs/open.c:1454 [inline]\n __x64_sys_openat+0x148/0x200 fs/open.c:1454\n do_syscall_x64 arch/x86/entry/common.c:51 [inline]\n do_syscall_6\n---truncated---"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-04T13:05:59.494Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/f587c1ac68956c4703857d650d9b1cd7bb2ac4d7"
        },
        {
          "url": "https://git.kernel.org/stable/c/2550149fcdf2934155ff625d76ad4e3d4b25bbc6"
        },
        {
          "url": "https://git.kernel.org/stable/c/be3eed59ac01f429ac10aaa46e26f653bcf581ab"
        },
        {
          "url": "https://git.kernel.org/stable/c/bc2aeb35ff167e0c6b0cedf0c96a5c41e6cba1ed"
        },
        {
          "url": "https://git.kernel.org/stable/c/fcede1f0a043ccefe9bc6ad57f12718e42f63f1d"
        }
      ],
      "title": "block, bfq: fix waker_bfqq UAF after bfq_split_bfqq()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-21631",
    "datePublished": "2025-01-19T10:17:49.439Z",
    "dateReserved": "2024-12-29T08:45:45.726Z",
    "dateUpdated": "2025-11-03T20:58:12.214Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 7.8, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"HIGH\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2025-21631\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-02-10T17:11:59.322368Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-416\", \"description\": \"CWE-416 Use After Free\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-02-10T17:12:00.701Z\"}}], \"cna\": {\"title\": \"block, bfq: fix waker_bfqq UAF after bfq_split_bfqq()\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"63a07379fdb6c72450cb05294461c6016b8b7726\", \"lessThan\": \"f587c1ac68956c4703857d650d9b1cd7bb2ac4d7\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"de0456460f2abf921e356ed2bd8da87a376680bd\", \"lessThan\": \"2550149fcdf2934155ff625d76ad4e3d4b25bbc6\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"0780451f03bf518bc032a7c584de8f92e2d39d7f\", \"lessThan\": \"be3eed59ac01f429ac10aaa46e26f653bcf581ab\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1ba0403ac6447f2d63914fb760c44a3b19c44eaf\", \"lessThan\": \"bc2aeb35ff167e0c6b0cedf0c96a5c41e6cba1ed\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1ba0403ac6447f2d63914fb760c44a3b19c44eaf\", \"lessThan\": \"fcede1f0a043ccefe9bc6ad57f12718e42f63f1d\", \"versionType\": \"git\"}], \"programFiles\": [\"block/bfq-iosched.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"6.12\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"6.12\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.15.177\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.125\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.72\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.12.10\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.12.*\"}, {\"status\": \"unaffected\", \"version\": \"6.13\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"block/bfq-iosched.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/f587c1ac68956c4703857d650d9b1cd7bb2ac4d7\"}, {\"url\": \"https://git.kernel.org/stable/c/2550149fcdf2934155ff625d76ad4e3d4b25bbc6\"}, {\"url\": \"https://git.kernel.org/stable/c/be3eed59ac01f429ac10aaa46e26f653bcf581ab\"}, {\"url\": \"https://git.kernel.org/stable/c/bc2aeb35ff167e0c6b0cedf0c96a5c41e6cba1ed\"}, {\"url\": \"https://git.kernel.org/stable/c/fcede1f0a043ccefe9bc6ad57f12718e42f63f1d\"}], \"x_generator\": {\"engine\": \"bippy-5f407fcff5a0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nblock, bfq: fix waker_bfqq UAF after bfq_split_bfqq()\\n\\nOur syzkaller report a following UAF for v6.6:\\n\\nBUG: KASAN: slab-use-after-free in bfq_init_rq+0x175d/0x17a0 block/bfq-iosched.c:6958\\nRead of size 8 at addr ffff8881b57147d8 by task fsstress/232726\\n\\nCPU: 2 PID: 232726 Comm: fsstress Not tainted 6.6.0-g3629d1885222 #39\\nCall Trace:\\n \u003cTASK\u003e\\n __dump_stack lib/dump_stack.c:88 [inline]\\n dump_stack_lvl+0x91/0xf0 lib/dump_stack.c:106\\n print_address_description.constprop.0+0x66/0x300 mm/kasan/report.c:364\\n print_report+0x3e/0x70 mm/kasan/report.c:475\\n kasan_report+0xb8/0xf0 mm/kasan/report.c:588\\n hlist_add_head include/linux/list.h:1023 [inline]\\n bfq_init_rq+0x175d/0x17a0 block/bfq-iosched.c:6958\\n bfq_insert_request.isra.0+0xe8/0xa20 block/bfq-iosched.c:6271\\n bfq_insert_requests+0x27f/0x390 block/bfq-iosched.c:6323\\n blk_mq_insert_request+0x290/0x8f0 block/blk-mq.c:2660\\n blk_mq_submit_bio+0x1021/0x15e0 block/blk-mq.c:3143\\n __submit_bio+0xa0/0x6b0 block/blk-core.c:639\\n __submit_bio_noacct_mq block/blk-core.c:718 [inline]\\n submit_bio_noacct_nocheck+0x5b7/0x810 block/blk-core.c:747\\n submit_bio_noacct+0xca0/0x1990 block/blk-core.c:847\\n __ext4_read_bh fs/ext4/super.c:205 [inline]\\n ext4_read_bh+0x15e/0x2e0 fs/ext4/super.c:230\\n __read_extent_tree_block+0x304/0x6f0 fs/ext4/extents.c:567\\n ext4_find_extent+0x479/0xd20 fs/ext4/extents.c:947\\n ext4_ext_map_blocks+0x1a3/0x2680 fs/ext4/extents.c:4182\\n ext4_map_blocks+0x929/0x15a0 fs/ext4/inode.c:660\\n ext4_iomap_begin_report+0x298/0x480 fs/ext4/inode.c:3569\\n iomap_iter+0x3dd/0x1010 fs/iomap/iter.c:91\\n iomap_fiemap+0x1f4/0x360 fs/iomap/fiemap.c:80\\n ext4_fiemap+0x181/0x210 fs/ext4/extents.c:5051\\n ioctl_fiemap.isra.0+0x1b4/0x290 fs/ioctl.c:220\\n do_vfs_ioctl+0x31c/0x11a0 fs/ioctl.c:811\\n __do_sys_ioctl fs/ioctl.c:869 [inline]\\n __se_sys_ioctl+0xae/0x190 fs/ioctl.c:857\\n do_syscall_x64 arch/x86/entry/common.c:51 [inline]\\n do_syscall_64+0x70/0x120 arch/x86/entry/common.c:81\\n entry_SYSCALL_64_after_hwframe+0x78/0xe2\\n\\nAllocated by task 232719:\\n kasan_save_stack+0x22/0x50 mm/kasan/common.c:45\\n kasan_set_track+0x25/0x30 mm/kasan/common.c:52\\n __kasan_slab_alloc+0x87/0x90 mm/kasan/common.c:328\\n kasan_slab_alloc include/linux/kasan.h:188 [inline]\\n slab_post_alloc_hook mm/slab.h:768 [inline]\\n slab_alloc_node mm/slub.c:3492 [inline]\\n kmem_cache_alloc_node+0x1b8/0x6f0 mm/slub.c:3537\\n bfq_get_queue+0x215/0x1f00 block/bfq-iosched.c:5869\\n bfq_get_bfqq_handle_split+0x167/0x5f0 block/bfq-iosched.c:6776\\n bfq_init_rq+0x13a4/0x17a0 block/bfq-iosched.c:6938\\n bfq_insert_request.isra.0+0xe8/0xa20 block/bfq-iosched.c:6271\\n bfq_insert_requests+0x27f/0x390 block/bfq-iosched.c:6323\\n blk_mq_insert_request+0x290/0x8f0 block/blk-mq.c:2660\\n blk_mq_submit_bio+0x1021/0x15e0 block/blk-mq.c:3143\\n __submit_bio+0xa0/0x6b0 block/blk-core.c:639\\n __submit_bio_noacct_mq block/blk-core.c:718 [inline]\\n submit_bio_noacct_nocheck+0x5b7/0x810 block/blk-core.c:747\\n submit_bio_noacct+0xca0/0x1990 block/blk-core.c:847\\n __ext4_read_bh fs/ext4/super.c:205 [inline]\\n ext4_read_bh_nowait+0x15a/0x240 fs/ext4/super.c:217\\n ext4_read_bh_lock+0xac/0xd0 fs/ext4/super.c:242\\n ext4_bread_batch+0x268/0x500 fs/ext4/inode.c:958\\n __ext4_find_entry+0x448/0x10f0 fs/ext4/namei.c:1671\\n ext4_lookup_entry fs/ext4/namei.c:1774 [inline]\\n ext4_lookup.part.0+0x359/0x6f0 fs/ext4/namei.c:1842\\n ext4_lookup+0x72/0x90 fs/ext4/namei.c:1839\\n __lookup_slow+0x257/0x480 fs/namei.c:1696\\n lookup_slow fs/namei.c:1713 [inline]\\n walk_component+0x454/0x5c0 fs/namei.c:2004\\n link_path_walk.part.0+0x773/0xda0 fs/namei.c:2331\\n link_path_walk fs/namei.c:3826 [inline]\\n path_openat+0x1b9/0x520 fs/namei.c:3826\\n do_filp_open+0x1b7/0x400 fs/namei.c:3857\\n do_sys_openat2+0x5dc/0x6e0 fs/open.c:1428\\n do_sys_open fs/open.c:1443 [inline]\\n __do_sys_openat fs/open.c:1459 [inline]\\n __se_sys_openat fs/open.c:1454 [inline]\\n __x64_sys_openat+0x148/0x200 fs/open.c:1454\\n do_syscall_x64 arch/x86/entry/common.c:51 [inline]\\n do_syscall_6\\n---truncated---\"}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-01-23T17:01:17.389Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2025-21631\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-02-10T17:21:05.990Z\", \"dateReserved\": \"2024-12-29T08:45:45.726Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-01-19T10:17:49.439Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.