CVE-2026-97560smb: client: fix one-byte OOB read in smb2_parse_native_symlink()
- —Not scoredno CVSS score yet
- 0.20%Exploitation in 30 daysEPSS · top 90% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: smb: client: fix one-byte OOB read in smb2_parse_native_symlink() When parsing a share-root relative native symlink, memcpy copies smb_target+1 (skipping the leading separator) but uses strlen(smb_target)+1 as the length, reading one byte past the allocated buffer. This fixes the following KASAN splat when accessing an SMB symlink with a target of '\a\b': BUG: KASAN: slab-out-of-bounds in smb2_parse_native_symlink+0x4f5/0xca0 Read of size 5 at addr ffff88800878fe21 by task netfsfuzz-execu/1 CPU: 1 UID: 0 PID: 1 Comm: netfsfuzz-execu Tainted: G N 7.2.0-11943-g2709dd5ae32f-dirty #1 PREEMPT(lazy) Hardware name: QEMU Ubuntu 24.04 PC v2 (i440FX + PIIX, arch_caps fix, 1996) Call Trace: <TASK> dump_stack_lvl+0x7b/0xa0 print_report+0xd0/0x630 kasan_report+0xe5/0x120 kasan_check_range+0x105/0x1b0 __asan_memcpy+0x23/0x60 smb2_parse_native_symlink+0x4f5/0xca0 parse_reparse_point+0x68a/0x1530 reparse_info_to_fattr+0x752/0xa20 cifs_get_fattr+0x873/0x15b0 cifs_get_inode_info+0xc0/0x310 cifs_lookup+0x308/0xa70 __lookup_slow+0x122/0x2b0 lookup_slow+0x50/0x70 path_lookupat+0x525/0xaf0 filename_lookup+0x1f2/0x550 vfs_statx+0xd1/0x1a0 vfs_fstatat+0x65/0xc0 __do_sys_newfstatat+0x9a/0x120 do_syscall_64+0xdd/0x4a0 entry_SYSCALL_64_after_hwframe+0x77/0x7f
Timeline
ID reserved
By Linux
- 1 day later
· 1 day later
Published
- 24 days later
· 24 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Received.
- EPSS (exploitation in 30 days)
- 0.20% · top 90% of all CVEs (14 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected 430afd3edabf942a908570e5a41414bb455f15f8 – < ff411fcbfc55eec1d66ea82483d254319dc8e973
- affected fc5a409552be479715b147748f2f61b41b512976 – < 22a9d0a9ba0c89be57558c1aa80dc60a571dd89c
- affected 723f4ef90452aa629f3d923e92e0449d69362b1d – < d1f173d28e964ba2c3c4ebe7491d594dc8c77a40
- affected 723f4ef90452aa629f3d923e92e0449d69362b1d – < 2a302fdbaf7dd00d285303c94af8f48321c22993
- affected 723f4ef90452aa629f3d923e92e0449d69362b1d – < cb26524ef4ac28fcfa554c0656e8dc412c38a8ff
- affected c9280c017ea13ff8678ef4f1ea78a4b683292e8b
- affected 6.6.64 – < 6.6.158
- affected 6.12.2 – < 6.12.111
- affected 6.11.11 – < 6.12
- affected 6.13
- unaffected < 6.13
- unaffected 6.6.158 – ≤ 6.6.*
- unaffected 6.12.111 – ≤ 6.12.*
- unaffected 6.18.53 – ≤ 6.18.*
- unaffected 7.2.7 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References5
- https://git.kernel.org/stable/c/ff411fcbfc55eec1d66ea82483d254319dc8e973 (opens in a new tab)
- https://git.kernel.org/stable/c/22a9d0a9ba0c89be57558c1aa80dc60a571dd89c (opens in a new tab)
- https://git.kernel.org/stable/c/d1f173d28e964ba2c3c4ebe7491d594dc8c77a40 (opens in a new tab)
- https://git.kernel.org/stable/c/2a302fdbaf7dd00d285303c94af8f48321c22993 (opens in a new tab)
- https://git.kernel.org/stable/c/cb26524ef4ac28fcfa554c0656e8dc412c38a8ff (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-86868 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-97560)Record last updated .