capabilities: fix undefined behavior in bit shift for CAP_TO_MASK (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.22 % · percentile 13 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Analyzed
Description
In the Linux kernel, the following vulnerability has been resolved: capabilities: fix undefined behavior in bit shift for CAP_TO_MASK Shifting signed 32-bit value by 31 bits is undefined, so changing significant bit to unsigned. The UBSAN warning calltrace like below: UBSAN: shift-out-of-bounds in security/commoncap.c:1252:2 left shift of 1 by 31 places cannot be represented in type 'int' Call Trace: <TASK> dump_stack_lvl+0x7d/0xa5 dump_stack+0x15/0x1b ubsan_epilogue+0xe/0x4e __ubsan_handle_shift_out_of_bounds+0x1e7/0x20c cap_task_prctl+0x561/0x6f0 security_task_prctl+0x5a/0xb0 __x64_sys_prctl+0x61/0x8f0 do_syscall_64+0x58/0x80 entry_SYSCALL_64_after_hwframe+0x63/0xcd </TASK>
Weaknesses (CWE)
- CWE-125 — Out-of-bounds Read
References
- https://git.kernel.org/stable/c/5b79fa628e2ab789e629a83cd211ef9b4c1a593e
- https://git.kernel.org/stable/c/65b0bc7a0690861812ade523d19f82688ab819dc
- https://git.kernel.org/stable/c/dbaab08c8677d598244d21afb7818e44e1c5d826
- https://git.kernel.org/stable/c/5661f111a1616ac105ec8cec81bff99b60f847ac
- https://git.kernel.org/stable/c/fcbd2b336834bd24e1d9454ad5737856470c10d7
- https://git.kernel.org/stable/c/151dc8087b5609e53b069c068e3f3ee100efa586
- https://git.kernel.org/stable/c/27bdb134c043ff32c459d98f16550d0ffa0b3c34
- https://git.kernel.org/stable/c/46653972e3ea64f79e7f8ae3aa41a4d3fdb70a13
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.1 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2025-12911
- GCVE · GCVE-0-2022-49870
CERT-FR advisories
- CERTFR-2026-AVI-0081 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2025-AVI-1009 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0587 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0560 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0529 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0509 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 2.6.25 < 4.9.334cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.10 < 4.14.300cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.15 < 4.19.267cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.20 < 5.4.225cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.5 < 5.10.155cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.11 < 5.15.79cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.16 < 6.0.9cpe:2.3:o:linux:linux_kernel:6.1:rc1:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.1:rc2:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.1:rc3:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.1:rc4:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected e338d263a76af78fe8f38a72131188b58fceb591 < 5b79fa628e2ab789e629a83cd211ef9b4c1a593e ; affected e338d263a76af78fe8f38a72131188b58fceb591 < 65b0bc7a0690861812ade523d19f82688ab819dc ; affected e338d263a76af78fe8f38a72131188b58fceb591 < dbaab08c8677d598244d21afb7818e44e1c5d826 ; affected e338d263a76af78fe8f38a72131188b58fceb591 < 5661f111a1616ac105ec8cec81bff99b60f847ac ; affected e338d263a76af78fe8f38a72131188b58fceb591 < fcbd2b336834bd24e1d9454ad5737856470c10d7 ; affected e338d263a76af78fe8f38a72131188b58fceb591 < 151dc8087b5609e53b069c068e3f3ee100efa586 |
| Linux · Linux | affected 2.6.25 ; unaffected 0 < 2.6.25 ; unaffected 4.9.334 ≤ 4.9.* ; unaffected 4.14.300 ≤ 4.14.* ; unaffected 4.19.267 ≤ 4.19.* ; unaffected 5.4.225 ≤ 5.4.* |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |