AZL-55203
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-55203.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/AZL-55203
- Upstream
- Published
- 2024-12-28T10:15:15Z
- Modified
- 2026-04-01T05:18:31.932911Z
- Severity
-
- 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- CVE-2024-56694 affecting package kernel for versions less than 5.15.176.3-1
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
bpf: fix recursive lock when verdict program return SK_PASS
When the streamverdict program returns SKPASS, it places the received skb into its own receive queue, but a recursive lock eventually occurs, leading to an operating system deadlock. This issue has been present since v6.9.
''' skpsockstrpdataready writelockbh(&sk->skcallbacklock) strpdataready strpreadsock readsock -> tcpreadsock strprecv cb.rcvmsg -> skpsockstrpread # now streamverdict return SKPASS without peer sock assign _SKPASS = skpsockmapverd(SKPASS, NULL) skpsockverdictapply skpsockskbingressself skpsockskbingressenqueue skpsockdataready readlockbh(&sk->skcallbacklock) <= dead lock
'''
This topic has been discussed before, but it has not been fixed. Previous discussion: https://lore.kernel.org/all/6684a5864ec86_403d20898@john.notmuch
- References