CVE-2024-53174
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:
SUNRPC: make sure cache entry active before cache_show
The function c_show was called with protection from RCU. This only
ensures that cp will not be freed. Therefore, the reference count for
cp can drop to zero, which will trigger a refcount use-after-free
warning when cache_get is called. To resolve this issue, use
cache_get_rcu to ensure that cp remains active.
————[ cut here ]———— refcount_t: addition on 0; use-after-free. WARNING: CPU: 7 PID: 822 at lib/refcount.c:25 refcount_warn_saturate+0xb1/0x120 CPU: 7 UID: 0 PID: 822 Comm: cat Not tainted 6.12.0-rc3+ #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.1-2.fc37 04/01/2014 RIP: 0010:refcount_warn_saturate+0xb1/0x120
Call Trace: <TASK> c_show+0x2fc/0x380 [sunrpc] seq_read_iter+0x589/0x770 seq_read+0x1e5/0x270 proc_reg_read+0xe1/0x140 vfs_read+0x125/0x530 ksys_read+0xc1/0x160 do_syscall_64+0x5f/0x170 entry_SYSCALL_64_after_hwframe+0x76/0x7e
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | d48cf356a13073853f19be6ca5ebbecfc2762ebe < e9be26735d055c42543a4d047a769cc6d0fb1504 | affected |
| Linux | Linux | d48cf356a13073853f19be6ca5ebbecfc2762ebe < 02999e135b013d85c6df738746e8e24699befee4 | affected |
| Linux | Linux | d48cf356a13073853f19be6ca5ebbecfc2762ebe < c7dac3af57e38b2054f990e573256d90bf887958 | affected |
| Linux | Linux | d48cf356a13073853f19be6ca5ebbecfc2762ebe < 068c0b50f3f700b94f78850834cd91ae3b34c2c1 | affected |
| Linux | Linux | d48cf356a13073853f19be6ca5ebbecfc2762ebe < acfaf37888e0f0732fb6a50ff093dce6d99994d0 | affected |
| Linux | Linux | d48cf356a13073853f19be6ca5ebbecfc2762ebe < ec305f303bf070b4f6896b7a76009f702956d402 | affected |
| Linux | Linux | d48cf356a13073853f19be6ca5ebbecfc2762ebe < d882e2b7fad3f5e5fac66184a347f408813f654a | affected |
| Linux | Linux | d48cf356a13073853f19be6ca5ebbecfc2762ebe < 2862eee078a4d2d1f584e7f24fa50dddfa5f3471 | affected |
| Linux | Linux | 4.20 | affected |
| Linux | Linux | 0 < 4.20 | unaffected |
| Linux | Linux | 5.4.287 <= 5.4.* | unaffected |
| Linux | Linux | 5.10.231 <= 5.10.* | unaffected |
| Linux | Linux | 5.15.174 <= 5.15.* | unaffected |
| Linux | Linux | 6.1.120 <= 6.1.* | unaffected |
| Linux | Linux | 6.6.64 <= 6.6.* | unaffected |
| Linux | Linux | 6.11.11 <= 6.11.* | unaffected |
| Linux | Linux | 6.12.2 <= 6.12.* | unaffected |
| Linux | Linux | 6.13 <= * | unaffected |
Weaknesses
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: total
CVE Program Container
Additional References
- https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html
- https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html
References
- https://git.kernel.org/stable/c/e9be26735d055c42543a4d047a769cc6d0fb1504
- https://git.kernel.org/stable/c/02999e135b013d85c6df738746e8e24699befee4
- https://git.kernel.org/stable/c/c7dac3af57e38b2054f990e573256d90bf887958
- https://git.kernel.org/stable/c/068c0b50f3f700b94f78850834cd91ae3b34c2c1
- https://git.kernel.org/stable/c/acfaf37888e0f0732fb6a50ff093dce6d99994d0
- https://git.kernel.org/stable/c/ec305f303bf070b4f6896b7a76009f702956d402
- https://git.kernel.org/stable/c/d882e2b7fad3f5e5fac66184a347f408813f654a
- https://git.kernel.org/stable/c/2862eee078a4d2d1f584e7f24fa50dddfa5f3471
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