CVE-2021-47440 (GCVE-0-2021-47440)

Vulnerability from cvelistv5 – Published: 2024-05-22 06:19 – Updated: 2025-05-04 07:10
VLAI?
Title
net: encx24j600: check error in devm_regmap_init_encx24j600
Summary
In the Linux kernel, the following vulnerability has been resolved: net: encx24j600: check error in devm_regmap_init_encx24j600 devm_regmap_init may return error which caused by like out of memory, this will results in null pointer dereference later when reading or writing register: general protection fault in encx24j600_spi_probe KASAN: null-ptr-deref in range [0x0000000000000090-0x0000000000000097] CPU: 0 PID: 286 Comm: spi-encx24j600- Not tainted 5.15.0-rc2-00142-g9978db750e31-dirty #11 9c53a778c1306b1b02359f3c2bbedc0222cba652 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 04/01/2014 RIP: 0010:regcache_cache_bypass drivers/base/regmap/regcache.c:540 Code: 54 41 89 f4 55 53 48 89 fb 48 83 ec 08 e8 26 94 a8 fe 48 8d bb a0 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 4a 03 00 00 4c 8d ab b0 00 00 00 48 8b ab a0 00 RSP: 0018:ffffc900010476b8 EFLAGS: 00010207 RAX: dffffc0000000000 RBX: fffffffffffffff4 RCX: 0000000000000000 RDX: 0000000000000012 RSI: ffff888002de0000 RDI: 0000000000000094 RBP: ffff888013c9a000 R08: 0000000000000000 R09: fffffbfff3f9cc6a R10: ffffc900010476e8 R11: fffffbfff3f9cc69 R12: 0000000000000001 R13: 000000000000000a R14: ffff888013c9af54 R15: ffff888013c9ad08 FS: 00007ffa984ab580(0000) GS:ffff88801fe00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055a6384136c8 CR3: 000000003bbe6003 CR4: 0000000000770ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 PKRU: 55555554 Call Trace: encx24j600_spi_probe drivers/net/ethernet/microchip/encx24j600.c:459 spi_probe drivers/spi/spi.c:397 really_probe drivers/base/dd.c:517 __driver_probe_device drivers/base/dd.c:751 driver_probe_device drivers/base/dd.c:782 __device_attach_driver drivers/base/dd.c:899 bus_for_each_drv drivers/base/bus.c:427 __device_attach drivers/base/dd.c:971 bus_probe_device drivers/base/bus.c:487 device_add drivers/base/core.c:3364 __spi_add_device drivers/spi/spi.c:599 spi_add_device drivers/spi/spi.c:641 spi_new_device drivers/spi/spi.c:717 new_device_store+0x18c/0x1f1 [spi_stub 4e02719357f1ff33f5a43d00630982840568e85e] dev_attr_store drivers/base/core.c:2074 sysfs_kf_write fs/sysfs/file.c:139 kernfs_fop_write_iter fs/kernfs/file.c:300 new_sync_write fs/read_write.c:508 (discriminator 4) vfs_write fs/read_write.c:594 ksys_write fs/read_write.c:648 do_syscall_64 arch/x86/entry/common.c:50 entry_SYSCALL_64_after_hwframe arch/x86/entry/entry_64.S:113 Add error check in devm_regmap_init_encx24j600 to avoid this situation.
Severity ?
2.3 (Low)
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 04fbfce7a222327b97ca165294ef19f0faa45960 , < 66358471fa75a713fd76bc8a4bd74cb14cd50a4f (git)
Affected: 04fbfce7a222327b97ca165294ef19f0faa45960 , < f043fac1133a6c5ef960a8422c0f6dd711dee462 (git)
Affected: 04fbfce7a222327b97ca165294ef19f0faa45960 , < fddc7f678d7fb93caa0d7bc512f968ff1e2bddbc (git)
Affected: 04fbfce7a222327b97ca165294ef19f0faa45960 , < 5e5494e6fc8a29c927e0478bec4a078a40da8901 (git)
Affected: 04fbfce7a222327b97ca165294ef19f0faa45960 , < 4c2eb80fc90b05559ce6ed1b8dfb2348420b5644 (git)
Affected: 04fbfce7a222327b97ca165294ef19f0faa45960 , < e19c10d6e07c59c96e90fe053a72683ad8b0397e (git)
Affected: 04fbfce7a222327b97ca165294ef19f0faa45960 , < 322c0e53496309e634d9db7349678eaad1d25b55 (git)
Affected: 04fbfce7a222327b97ca165294ef19f0faa45960 , < f03dca0c9e2297c84a018e306f8a9cd534ee4287 (git)
Create a notification for this product.
    Linux Linux Affected: 4.4
Unaffected: 0 , < 4.4 (semver)
Unaffected: 4.4.290 , ≤ 4.4.* (semver)
Unaffected: 4.9.288 , ≤ 4.9.* (semver)
Unaffected: 4.14.252 , ≤ 4.14.* (semver)
Unaffected: 4.19.213 , ≤ 4.19.* (semver)
Unaffected: 5.4.155 , ≤ 5.4.* (semver)
Unaffected: 5.10.75 , ≤ 5.10.* (semver)
Unaffected: 5.14.14 , ≤ 5.14.* (semver)
Unaffected: 5.15 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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\"programFiles\": [\"drivers/net/ethernet/microchip/encx24j600-regmap.c\", \"drivers/net/ethernet/microchip/encx24j600.c\", \"drivers/net/ethernet/microchip/encx24j600_hw.h\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"4.4\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"4.4\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"4.4.290\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.4.*\"}, {\"status\": \"unaffected\", \"version\": \"4.9.288\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.9.*\"}, {\"status\": \"unaffected\", \"version\": \"4.14.252\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.14.*\"}, {\"status\": \"unaffected\", \"version\": \"4.19.213\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.19.*\"}, {\"status\": \"unaffected\", \"version\": \"5.4.155\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.75\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.14.14\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.14.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/net/ethernet/microchip/encx24j600-regmap.c\", \"drivers/net/ethernet/microchip/encx24j600.c\", \"drivers/net/ethernet/microchip/encx24j600_hw.h\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/66358471fa75a713fd76bc8a4bd74cb14cd50a4f\"}, {\"url\": \"https://git.kernel.org/stable/c/f043fac1133a6c5ef960a8422c0f6dd711dee462\"}, {\"url\": \"https://git.kernel.org/stable/c/fddc7f678d7fb93caa0d7bc512f968ff1e2bddbc\"}, {\"url\": \"https://git.kernel.org/stable/c/5e5494e6fc8a29c927e0478bec4a078a40da8901\"}, {\"url\": \"https://git.kernel.org/stable/c/4c2eb80fc90b05559ce6ed1b8dfb2348420b5644\"}, {\"url\": \"https://git.kernel.org/stable/c/e19c10d6e07c59c96e90fe053a72683ad8b0397e\"}, {\"url\": \"https://git.kernel.org/stable/c/322c0e53496309e634d9db7349678eaad1d25b55\"}, {\"url\": \"https://git.kernel.org/stable/c/f03dca0c9e2297c84a018e306f8a9cd534ee4287\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet: encx24j600: check error in devm_regmap_init_encx24j600\\n\\ndevm_regmap_init may return error which caused by like out of memory,\\nthis will results in null pointer dereference later when reading\\nor writing register:\\n\\ngeneral protection fault in encx24j600_spi_probe\\nKASAN: null-ptr-deref in range [0x0000000000000090-0x0000000000000097]\\nCPU: 0 PID: 286 Comm: spi-encx24j600- Not tainted 5.15.0-rc2-00142-g9978db750e31-dirty #11 9c53a778c1306b1b02359f3c2bbedc0222cba652\\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 04/01/2014\\nRIP: 0010:regcache_cache_bypass drivers/base/regmap/regcache.c:540\\nCode: 54 41 89 f4 55 53 48 89 fb 48 83 ec 08 e8 26 94 a8 fe 48 8d bb a0 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 \u003c80\u003e 3c 02 00 0f 85 4a 03 00 00 4c 8d ab b0 00 00 00 48 8b ab a0 00\\nRSP: 0018:ffffc900010476b8 EFLAGS: 00010207\\nRAX: dffffc0000000000 RBX: fffffffffffffff4 RCX: 0000000000000000\\nRDX: 0000000000000012 RSI: ffff888002de0000 RDI: 0000000000000094\\nRBP: ffff888013c9a000 R08: 0000000000000000 R09: fffffbfff3f9cc6a\\nR10: ffffc900010476e8 R11: fffffbfff3f9cc69 R12: 0000000000000001\\nR13: 000000000000000a R14: ffff888013c9af54 R15: ffff888013c9ad08\\nFS:  00007ffa984ab580(0000) GS:ffff88801fe00000(0000) knlGS:0000000000000000\\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\nCR2: 000055a6384136c8 CR3: 000000003bbe6003 CR4: 0000000000770ef0\\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\\nPKRU: 55555554\\nCall Trace:\\n encx24j600_spi_probe drivers/net/ethernet/microchip/encx24j600.c:459\\n spi_probe drivers/spi/spi.c:397\\n really_probe drivers/base/dd.c:517\\n __driver_probe_device drivers/base/dd.c:751\\n driver_probe_device drivers/base/dd.c:782\\n __device_attach_driver drivers/base/dd.c:899\\n bus_for_each_drv drivers/base/bus.c:427\\n __device_attach drivers/base/dd.c:971\\n bus_probe_device drivers/base/bus.c:487\\n device_add drivers/base/core.c:3364\\n __spi_add_device drivers/spi/spi.c:599\\n spi_add_device drivers/spi/spi.c:641\\n spi_new_device drivers/spi/spi.c:717\\n new_device_store+0x18c/0x1f1 [spi_stub 4e02719357f1ff33f5a43d00630982840568e85e]\\n dev_attr_store drivers/base/core.c:2074\\n sysfs_kf_write fs/sysfs/file.c:139\\n kernfs_fop_write_iter fs/kernfs/file.c:300\\n new_sync_write fs/read_write.c:508 (discriminator 4)\\n vfs_write fs/read_write.c:594\\n ksys_write fs/read_write.c:648\\n do_syscall_64 arch/x86/entry/common.c:50\\n entry_SYSCALL_64_after_hwframe arch/x86/entry/entry_64.S:113\\n\\nAdd error check in devm_regmap_init_encx24j600 to avoid this situation.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.4.290\", \"versionStartIncluding\": \"4.4\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.9.288\", \"versionStartIncluding\": \"4.4\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.14.252\", \"versionStartIncluding\": \"4.4\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.213\", \"versionStartIncluding\": \"4.4\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.155\", \"versionStartIncluding\": \"4.4\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.75\", \"versionStartIncluding\": \"4.4\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.14.14\", \"versionStartIncluding\": \"4.4\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15\", \"versionStartIncluding\": \"4.4\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T07:10:55.595Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2021-47440\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-05-04T07:10:55.595Z\", \"dateReserved\": \"2024-05-21T14:58:30.831Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-05-22T06:19:34.890Z\", \"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.