ftrace: Fix UAF when lookup kallsym after ftrace disabled
In the Linux kernel, the following vulnerability has been resolved: ftrace: Fix UAF when lookup kallsym after ftrace disabled The following issue happens with a buggy module: BUG: unable to handle page fault for address: ffffffffc05d0218 PGD 1bd66f067 P4D 1bd66f067 PUD 1bd671067 PMD 101808067 PTE 0 Oops: Oops: 0000 [#1] SMP KASAN PTI Tainted: [O]=OOT_MODULE, [E]=UNSIGNED_MODULE Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS RIP: 0010:sized_strscpy+0x81/0x2f0 RSP: 0018:ffff88812d76fa08 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffffffffc0601010 RCX: dffffc0000000000 RDX: 0000000000000038 RSI: dffffc0000000000 RDI: ffff88812608da2d RBP: 8080808080808080 R08: ffff88812608da2d R09: ffff88812608da68 R10: ffff88812608d82d R11: ffff88812608d810 R12: 0000000000000038 R13: ffff88812608da2d R14: ffffffffc05d0218 R15: fefefefefefefeff FS: 00007fef552de740(0000) GS:ffff8884251c7000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffc05d0218 CR3: 00000001146f0000 CR4: 00000000000006f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ftrace_mod_get_kallsym+0x1ac/0x590 update_iter_mod+0x239/0x5b0 s_next+0x5b/0xa0 seq_read_iter+0x8c9/0x1070 seq_read+0x249/0x3b0 proc_reg_read+0x1b0/0x280 vfs_read+0x17f/0x920 ksys_read+0xf3/0x1c0 do_syscall_64+0x5f/0x2e0 entry_SYSCALL_64_after_hwframe+0x76/0x7e The above issue may happen as follows: (1) Add kprobe
CVE-2025-38346
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2025-38346
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "aba4b5c22cbac296f4081a0476d0c55828f135b4",
"lessThan": "d064c68781c19f378af1ae741d9132d35d24b2bb",
"versionType": "git"
},
{
"status": "affected",
"version": "aba4b5c22cbac296f4081a0476d0c55828f135b4",
"lessThan": "8690cd3258455bbae64f809e1d3ee0f043661c71",
"versionType": "git"
},
{
"status": "affected",
"version": "aba4b5c22cbac296f4081a0476d0c55828f135b4",
"lessThan": "6805582abb720681dd1c87ff677f155dcf4e86c9",
"versionType": "git"
},
{
"status": "affected",
"version": "aba4b5c22cbac296f4081a0476d0c55828f135b4",
"lessThan": "03a162933c4a03b9f1a84f7d8482903c7e1e11bb",
"versionType": "git"
},
{
"status": "affected",
"version": "aba4b5c22cbac296f4081a0476d0c55828f135b4",
"lessThan": "83a692a9792aa86249d68a8ac0b9d55ecdd255fa",
"versionType": "git"
},
{
"status": "affected",
"version": "aba4b5c22cbac296f4081a0476d0c55828f135b4",
"lessThan": "8e89c17dc8970c5f71a3a991f5724d4c8de42d8c",
"versionType": "git"
},
{
"status": "affected",
"version": "aba4b5c22cbac296f4081a0476d0c55828f135b4",
"lessThan": "f78a786ad9a5443a29eef4dae60cde85b7375129",
"versionType": "git"
},
{
"status": "affected",
"version": "aba4b5c22cbac296f4081a0476d0c55828f135b4",
"lessThan": "f914b52c379c12288b7623bb814d0508dbe7481d",
"versionType": "git"
}
],
"programFiles": [
"kernel/trace/ftrace.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.15"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.15",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.4.295",
"versionType": "semver",
"lessThanOrEqual": "5.4.*"
},
{
"status": "unaffected",
"version": "5.10.239",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.186",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.142",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.95",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.35",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.15.4",
"versionType": "semver",
"lessThanOrEqual": "6.15.*"
},
{
"status": "unaffected",
"version": "6.16",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"kernel/trace/ftrace.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2025-38346
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #30560 · Revision 1
- Added to Heist Feed
- Publisher date