CVE-2024-50133LoongArch: Don't crash in stack_top() for tasks without vDSO
- 5.5MediumCVSS base score
- 0.22%Exploitation in 30 daysEPSS · top 88% 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: LoongArch: Don't crash in stack_top() for tasks without vDSO Not all tasks have a vDSO mapped, for example kthreads never do. If such a task ever ends up calling stack_top(), it will derefence the NULL vdso pointer and crash. This can for example happen when using kunit: [<9000000000203874>] stack_top+0x58/0xa8 [<90000000002956cc>] arch_pick_mmap_layout+0x164/0x220 [<90000000003c284c>] kunit_vm_mmap_init+0x108/0x12c [<90000000003c1fbc>] __kunit_add_resource+0x38/0x8c [<90000000003c2704>] kunit_vm_mmap+0x88/0xc8 [<9000000000410b14>] usercopy_test_init+0xbc/0x25c [<90000000003c1db4>] kunit_try_run_case+0x5c/0x184 [<90000000003c3d54>] kunit_generic_run_threadfn_adapter+0x24/0x48 [<900000000022e4bc>] kthread+0xc8/0xd4 [<9000000000200ce8>] ret_from_kernel_thread+0xc/0xa4
Timeline
ID reserved
By Linux
- 15 days later
· 15 days later
Published
- 18 months later
· 18 months 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
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| NVDNVD · Modified | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.22% · top 88% of all CVEs (13 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Affected products
- affected 803b0fc5c3f2baa6e54978cd576407896f789b08 – < a67d4a02bf43e15544179895ede7d5f97b84b550
- affected 803b0fc5c3f2baa6e54978cd576407896f789b08 – < a94c197d4d749954dfaa37e907fcc8c04e4aad7e
- affected 803b0fc5c3f2baa6e54978cd576407896f789b08 – < 041cc3860b06770357876d1114d615333b0fbf31
- affected 803b0fc5c3f2baa6e54978cd576407896f789b08 – < 134475a9ab8487527238d270639a8cb74c10aab2
- affected 5.19
- unaffected < 5.19
- unaffected 6.1.115 – ≤ 6.1.*
- unaffected 6.6.59 – ≤ 6.6.*
- unaffected 6.11.6 – ≤ 6.11.*
- unaffected 6.12 – ≤ *
References
References5
- https://git.kernel.org/stable/c/a67d4a02bf43e15544179895ede7d5f97b84b550 (opens in a new tab)
- https://git.kernel.org/stable/c/a94c197d4d749954dfaa37e907fcc8c04e4aad7e (opens in a new tab)
- https://git.kernel.org/stable/c/041cc3860b06770357876d1114d615333b0fbf31 (opens in a new tab)
- https://git.kernel.org/stable/c/134475a9ab8487527238d270639a8cb74c10aab2 (opens in a new tab)
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html (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-2024-44635 (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-2024-50133)Record last updated .