CVE-2022-49053
7.8
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved:
scsi: target: tcmu: Fix possible page UAF
tcmu_try_get_data_page() looks up pages under cmdr_lock, but it does not take refcount properly and just returns page pointer. When tcmu_try_get_data_page() returns, the returned page may have been freed by tcmu_blocks_release().
We need to get_page() under cmdr_lock to avoid concurrent tcmu_blocks_release().
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 141685a39151aea95eb56562d2953e919c6c73da < d7c5d79e50be6e06b669141e3db1f977a0dd4e8e | affected |
| Linux | Linux | 141685a39151aea95eb56562d2953e919c6c73da < e3e0e067d5b34e4a68e3cc55f8eebc413f56f8ed | affected |
| Linux | Linux | 141685a39151aea95eb56562d2953e919c6c73da < fb7a5115422fbd6a4d505e8844f1ef5529f10489 | affected |
| Linux | Linux | 141685a39151aea95eb56562d2953e919c6c73da < aec36b98a1bbaa84bfd8299a306e4c12314af626 | affected |
| Linux | Linux | 141685a39151aea95eb56562d2953e919c6c73da < b7f3b5d70c834f49f7d87a2f2ed1c6284d9a0322 | affected |
| Linux | Linux | 141685a39151aea95eb56562d2953e919c6c73da < a9564d84ed9f6ee71017d062d0d2182154294a4b | affected |
| Linux | Linux | 141685a39151aea95eb56562d2953e919c6c73da < a6968f7a367f128d120447360734344d5a3d5336 | affected |
| Linux | Linux | 4.12 | affected |
| Linux | Linux | 0 < 4.12 | unaffected |
| Linux | Linux | 4.14.276 <= 4.14.* | unaffected |
| Linux | Linux | 4.19.239 <= 4.19.* | unaffected |
| Linux | Linux | 5.4.190 <= 5.4.* | unaffected |
| Linux | Linux | 5.10.112 <= 5.10.* | unaffected |
| Linux | Linux | 5.15.35 <= 5.15.* | unaffected |
| Linux | Linux | 5.17.4 <= 5.17.* | unaffected |
| Linux | Linux | 5.18 <= * | unaffected |
Weaknesses
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: total
References
- https://git.kernel.org/stable/c/d7c5d79e50be6e06b669141e3db1f977a0dd4e8e
- https://git.kernel.org/stable/c/e3e0e067d5b34e4a68e3cc55f8eebc413f56f8ed
- https://git.kernel.org/stable/c/fb7a5115422fbd6a4d505e8844f1ef5529f10489
- https://git.kernel.org/stable/c/aec36b98a1bbaa84bfd8299a306e4c12314af626
- https://git.kernel.org/stable/c/b7f3b5d70c834f49f7d87a2f2ed1c6284d9a0322
- https://git.kernel.org/stable/c/a9564d84ed9f6ee71017d062d0d2182154294a4b
- https://git.kernel.org/stable/c/a6968f7a367f128d120447360734344d5a3d5336
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