CVE-2024-56558
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2024-56558
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-56558.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2024-56558
- Downstream
- Related
- Published
- 2024-12-27T14:23:03.902Z
- Modified
- 2025-11-28T02:33:50.067041Z
- Severity
-
- 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- nfsd: make sure exp active before svc_export_show
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
nfsd: make sure exp active before svcexportshow
The function
e_showwas called with protection from RCU. This only ensures thatexpwill not be freed. Therefore, the reference count forexpcan drop to zero, which will trigger a refcount use-after-free warning whenexp_getis called. To resolve this issue, usecache_get_rcuto ensure thatexpremains active.------------[ cut here ]------------ refcountt: addition on 0; use-after-free. WARNING: CPU: 3 PID: 819 at lib/refcount.c:25 refcountwarnsaturate+0xb1/0x120 CPU: 3 UID: 0 PID: 819 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:refcountwarnsaturate+0xb1/0x120 ... Call Trace: <TASK> eshow+0x20b/0x230 [nfsd] seqreaditer+0x589/0x770 seqread+0x1e5/0x270 vfsread+0x125/0x530 ksysread+0xc1/0x160 dosyscall64+0x5f/0x170 entrySYSCALL64after_hwframe+0x76/0x7e
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/56xxx/CVE-2024-56558.json" }- References
-
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/1cecfdbc6bfc89c516d286884c7f29267b95de2b
- https://git.kernel.org/stable/c/6cefcadd34e3c71c81ea64b899a0daa86314a51a
- https://git.kernel.org/stable/c/7365d1f8de63cffdbbaa2287ce0205438e1a922f
- https://git.kernel.org/stable/c/7d8f7816bebcd2e7400bb4d786eccb8f33c9f9ec
- https://git.kernel.org/stable/c/7fd29d284b55c2274f7a748e6c5f25b4758b8da5
- https://git.kernel.org/stable/c/be8f982c369c965faffa198b46060f8853e0f1f0
- https://git.kernel.org/stable/c/e2fa0d0e327279a8defb87b263cd0bf288fd9261
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/56xxx/CVE-2024-56558.json
- https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html
- https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html
- https://nvd.nist.gov/vuln/detail/CVE-2024-56558
Affected packages
Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedbf18f163e89c52e09c96534db45c4274273a0b34Fixede2fa0d0e327279a8defb87b263cd0bf288fd9261Fixed7fd29d284b55c2274f7a748e6c5f25b4758b8da5Fixed6cefcadd34e3c71c81ea64b899a0daa86314a51aFixed7d8f7816bebcd2e7400bb4d786eccb8f33c9f9ecFixed1cecfdbc6bfc89c516d286884c7f29267b95de2bFixed7365d1f8de63cffdbbaa2287ce0205438e1a922fFixedbe8f982c369c965faffa198b46060f8853e0f1f0
Linux / Kernel
Package
- Name
- Kernel
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced3.17.0Fixed5.4.287
- Type
- ECOSYSTEM
- Events
-
Introduced5.5.0Fixed5.10.231
- Type
- ECOSYSTEM
- Events
-
Introduced5.11.0Fixed5.15.174
- Type
- ECOSYSTEM
- Events
-
Introduced5.16.0Fixed6.1.120
- Type
- ECOSYSTEM
- Events
-
Introduced6.2.0Fixed6.6.64
- Type
- ECOSYSTEM
- Events
-
Introduced6.7.0Fixed6.12.4