CVE-2024-26608 (GCVE-0-2024-26608)
Vulnerability from cvelistv5 – Published: 2024-02-29 15:52 – Updated: 2025-05-04 08:52
VLAI?
Title
ksmbd: fix global oob in ksmbd_nl_policy
Summary
In the Linux kernel, the following vulnerability has been resolved:
ksmbd: fix global oob in ksmbd_nl_policy
Similar to a reported issue (check the commit b33fb5b801c6 ("net:
qualcomm: rmnet: fix global oob in rmnet_policy"), my local fuzzer finds
another global out-of-bounds read for policy ksmbd_nl_policy. See bug
trace below:
==================================================================
BUG: KASAN: global-out-of-bounds in validate_nla lib/nlattr.c:386 [inline]
BUG: KASAN: global-out-of-bounds in __nla_validate_parse+0x24af/0x2750 lib/nlattr.c:600
Read of size 1 at addr ffffffff8f24b100 by task syz-executor.1/62810
CPU: 0 PID: 62810 Comm: syz-executor.1 Tainted: G N 6.1.0 #3
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 04/01/2014
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x8b/0xb3 lib/dump_stack.c:106
print_address_description mm/kasan/report.c:284 [inline]
print_report+0x172/0x475 mm/kasan/report.c:395
kasan_report+0xbb/0x1c0 mm/kasan/report.c:495
validate_nla lib/nlattr.c:386 [inline]
__nla_validate_parse+0x24af/0x2750 lib/nlattr.c:600
__nla_parse+0x3e/0x50 lib/nlattr.c:697
__nlmsg_parse include/net/netlink.h:748 [inline]
genl_family_rcv_msg_attrs_parse.constprop.0+0x1b0/0x290 net/netlink/genetlink.c:565
genl_family_rcv_msg_doit+0xda/0x330 net/netlink/genetlink.c:734
genl_family_rcv_msg net/netlink/genetlink.c:833 [inline]
genl_rcv_msg+0x441/0x780 net/netlink/genetlink.c:850
netlink_rcv_skb+0x14f/0x410 net/netlink/af_netlink.c:2540
genl_rcv+0x24/0x40 net/netlink/genetlink.c:861
netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
netlink_unicast+0x54e/0x800 net/netlink/af_netlink.c:1345
netlink_sendmsg+0x930/0xe50 net/netlink/af_netlink.c:1921
sock_sendmsg_nosec net/socket.c:714 [inline]
sock_sendmsg+0x154/0x190 net/socket.c:734
____sys_sendmsg+0x6df/0x840 net/socket.c:2482
___sys_sendmsg+0x110/0x1b0 net/socket.c:2536
__sys_sendmsg+0xf3/0x1c0 net/socket.c:2565
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3b/0x90 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fdd66a8f359
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fdd65e00168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fdd66bbcf80 RCX: 00007fdd66a8f359
RDX: 0000000000000000 RSI: 0000000020000500 RDI: 0000000000000003
RBP: 00007fdd66ada493 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc84b81aff R14: 00007fdd65e00300 R15: 0000000000022000
</TASK>
The buggy address belongs to the variable:
ksmbd_nl_policy+0x100/0xa80
The buggy address belongs to the physical page:
page:0000000034f47940 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1ccc4b
flags: 0x200000000001000(reserved|node=0|zone=2)
raw: 0200000000001000 ffffea00073312c8 ffffea00073312c8 0000000000000000
raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffffffff8f24b000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffffffff8f24b080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffffffff8f24b100: f9 f9 f9 f9 00 00 f9 f9 f9 f9 f9 f9 00 00 07 f9
^
ffffffff8f24b180: f9 f9 f9 f9 00 05 f9 f9 f9 f9 f9 f9 00 00 00 05
ffffffff8f24b200: f9 f9 f9 f9 00 00 03 f9 f9 f9 f9 f9 00 00 04 f9
==================================================================
To fix it, add a placeholder named __KSMBD_EVENT_MAX and let
KSMBD_EVENT_MAX to be its original value - 1 according to what other
netlink families do. Also change two sites that refer the
KSMBD_EVENT_MAX to correct value.
Severity ?
7.8 (High)
CWE
- CWE-125 - Out-of-bounds Read
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Affected:
0626e6641f6b467447c81dd7678a69c66f7746cf , < aaa1f1a2ee80888c12ae2783f3a0be10e14067c5
(git)
Affected: 0626e6641f6b467447c81dd7678a69c66f7746cf , < 2c939c74ef0b74e99b92e32edc2a59f9b9ca3d5a (git) Affected: 0626e6641f6b467447c81dd7678a69c66f7746cf , < 9863a53100f47652755545c2bd43e14a1855104d (git) Affected: 0626e6641f6b467447c81dd7678a69c66f7746cf , < 6993328a4cd62a24df254b587c0796a4a1eecc95 (git) Affected: 0626e6641f6b467447c81dd7678a69c66f7746cf , < ebeae8adf89d9a82359f6659b1663d09beec2faa (git) |
||
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\"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-2024-26608\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-11-07T20:08:53.523134Z\"}}}], \"affected\": [{\"cpes\": [\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\"], \"vendor\": \"linux\", \"product\": \"linux_kernel\", \"versions\": [{\"status\": \"affected\", \"version\": \"0626e6641f6b\", \"lessThan\": \"aaa1f1a2ee80\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"0626e6641f6b\", \"lessThan\": \"2c939c74ef0b\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"0626e6641f6b\", \"lessThan\": \"9863a53100f4\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"0626e6641f6b\", \"lessThan\": \"6993328a4cd6\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"0626e6641f6b\", \"lessThan\": \"ebeae8adf89d\", \"versionType\": \"git\"}], \"defaultStatus\": \"unaffected\"}, {\"cpes\": [\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\"], \"vendor\": \"linux\", \"product\": \"linux_kernel\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.15\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.15\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.15.149\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.0\"}, {\"status\": \"unaffected\", \"version\": \"6.1.76\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.0\"}, {\"status\": \"unaffected\", \"version\": \"6.6.15\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.0\"}, {\"status\": \"unaffected\", \"version\": \"6.7.3\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.7.0\"}, {\"status\": \"unaffected\", \"version\": \"6.8\", \"lessThan\": \"*\", \"versionType\": \"semver\"}], \"defaultStatus\": \"affected\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-125\", \"description\": \"CWE-125 Out-of-bounds Read\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-07-05T15:20:41.711Z\"}}], \"cna\": {\"title\": \"ksmbd: fix global oob in ksmbd_nl_policy\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"0626e6641f6b467447c81dd7678a69c66f7746cf\", \"lessThan\": \"aaa1f1a2ee80888c12ae2783f3a0be10e14067c5\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"0626e6641f6b467447c81dd7678a69c66f7746cf\", \"lessThan\": \"2c939c74ef0b74e99b92e32edc2a59f9b9ca3d5a\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"0626e6641f6b467447c81dd7678a69c66f7746cf\", \"lessThan\": \"9863a53100f47652755545c2bd43e14a1855104d\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"0626e6641f6b467447c81dd7678a69c66f7746cf\", \"lessThan\": \"6993328a4cd62a24df254b587c0796a4a1eecc95\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"0626e6641f6b467447c81dd7678a69c66f7746cf\", \"lessThan\": \"ebeae8adf89d9a82359f6659b1663d09beec2faa\", \"versionType\": \"git\"}], \"programFiles\": [\"fs/smb/server/ksmbd_netlink.h\", \"fs/smb/server/transport_ipc.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.15\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.15\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.15.149\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.76\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.15\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.7.3\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.7.*\"}, {\"status\": \"unaffected\", \"version\": \"6.8\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"fs/smb/server/ksmbd_netlink.h\", \"fs/smb/server/transport_ipc.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/aaa1f1a2ee80888c12ae2783f3a0be10e14067c5\"}, {\"url\": \"https://git.kernel.org/stable/c/2c939c74ef0b74e99b92e32edc2a59f9b9ca3d5a\"}, {\"url\": \"https://git.kernel.org/stable/c/9863a53100f47652755545c2bd43e14a1855104d\"}, {\"url\": \"https://git.kernel.org/stable/c/6993328a4cd62a24df254b587c0796a4a1eecc95\"}, {\"url\": \"https://git.kernel.org/stable/c/ebeae8adf89d9a82359f6659b1663d09beec2faa\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nksmbd: fix global oob in ksmbd_nl_policy\\n\\nSimilar to a reported issue (check the commit b33fb5b801c6 (\\\"net:\\nqualcomm: rmnet: fix global oob in rmnet_policy\\\"), my local fuzzer finds\\nanother global out-of-bounds read for policy ksmbd_nl_policy. See bug\\ntrace below:\\n\\n==================================================================\\nBUG: KASAN: global-out-of-bounds in validate_nla lib/nlattr.c:386 [inline]\\nBUG: KASAN: global-out-of-bounds in __nla_validate_parse+0x24af/0x2750 lib/nlattr.c:600\\nRead of size 1 at addr ffffffff8f24b100 by task syz-executor.1/62810\\n\\nCPU: 0 PID: 62810 Comm: syz-executor.1 Tainted: G N 6.1.0 #3\\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 04/01/2014\\nCall Trace:\\n \u003cTASK\u003e\\n __dump_stack lib/dump_stack.c:88 [inline]\\n dump_stack_lvl+0x8b/0xb3 lib/dump_stack.c:106\\n print_address_description mm/kasan/report.c:284 [inline]\\n print_report+0x172/0x475 mm/kasan/report.c:395\\n kasan_report+0xbb/0x1c0 mm/kasan/report.c:495\\n validate_nla lib/nlattr.c:386 [inline]\\n __nla_validate_parse+0x24af/0x2750 lib/nlattr.c:600\\n __nla_parse+0x3e/0x50 lib/nlattr.c:697\\n __nlmsg_parse include/net/netlink.h:748 [inline]\\n genl_family_rcv_msg_attrs_parse.constprop.0+0x1b0/0x290 net/netlink/genetlink.c:565\\n genl_family_rcv_msg_doit+0xda/0x330 net/netlink/genetlink.c:734\\n genl_family_rcv_msg net/netlink/genetlink.c:833 [inline]\\n genl_rcv_msg+0x441/0x780 net/netlink/genetlink.c:850\\n netlink_rcv_skb+0x14f/0x410 net/netlink/af_netlink.c:2540\\n genl_rcv+0x24/0x40 net/netlink/genetlink.c:861\\n netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]\\n netlink_unicast+0x54e/0x800 net/netlink/af_netlink.c:1345\\n netlink_sendmsg+0x930/0xe50 net/netlink/af_netlink.c:1921\\n sock_sendmsg_nosec net/socket.c:714 [inline]\\n sock_sendmsg+0x154/0x190 net/socket.c:734\\n ____sys_sendmsg+0x6df/0x840 net/socket.c:2482\\n ___sys_sendmsg+0x110/0x1b0 net/socket.c:2536\\n __sys_sendmsg+0xf3/0x1c0 net/socket.c:2565\\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\\n do_syscall_64+0x3b/0x90 arch/x86/entry/common.c:80\\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\\nRIP: 0033:0x7fdd66a8f359\\nCode: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48\\nRSP: 002b:00007fdd65e00168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e\\nRAX: ffffffffffffffda RBX: 00007fdd66bbcf80 RCX: 00007fdd66a8f359\\nRDX: 0000000000000000 RSI: 0000000020000500 RDI: 0000000000000003\\nRBP: 00007fdd66ada493 R08: 0000000000000000 R09: 0000000000000000\\nR10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000\\nR13: 00007ffc84b81aff R14: 00007fdd65e00300 R15: 0000000000022000\\n \u003c/TASK\u003e\\n\\nThe buggy address belongs to the variable:\\n ksmbd_nl_policy+0x100/0xa80\\n\\nThe buggy address belongs to the physical page:\\npage:0000000034f47940 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1ccc4b\\nflags: 0x200000000001000(reserved|node=0|zone=2)\\nraw: 0200000000001000 ffffea00073312c8 ffffea00073312c8 0000000000000000\\nraw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000\\npage dumped because: kasan: bad access detected\\n\\nMemory state around the buggy address:\\n ffffffff8f24b000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00\\n ffffffff8f24b080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00\\n\u003effffffff8f24b100: f9 f9 f9 f9 00 00 f9 f9 f9 f9 f9 f9 00 00 07 f9\\n ^\\n ffffffff8f24b180: f9 f9 f9 f9 00 05 f9 f9 f9 f9 f9 f9 00 00 00 05\\n ffffffff8f24b200: f9 f9 f9 f9 00 00 03 f9 f9 f9 f9 f9 00 00 04 f9\\n==================================================================\\n\\nTo fix it, add a placeholder named __KSMBD_EVENT_MAX and let\\nKSMBD_EVENT_MAX to be its original value - 1 according to what other\\nnetlink families do. Also change two sites that refer the\\nKSMBD_EVENT_MAX to correct value.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.149\", \"versionStartIncluding\": \"5.15\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.76\", \"versionStartIncluding\": \"5.15\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.15\", \"versionStartIncluding\": \"5.15\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.7.3\", \"versionStartIncluding\": \"5.15\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.8\", \"versionStartIncluding\": \"5.15\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T08:52:14.939Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2024-26608\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-05-04T08:52:14.939Z\", \"dateReserved\": \"2024-02-19T14:20:24.130Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-02-29T15:52:14.626Z\", \"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.
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