AZL-56375
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-56375.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/AZL-56375
- Upstream
- Published
- 2025-01-31T12:15:29Z
- Modified
- 2026-04-01T05:18:52.548464Z
- 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
- CVE-2025-21680 affecting package kernel for versions less than 6.6.76.1-1
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
pktgen: Avoid out-of-bounds access in getimixentries
Passing a sufficient amount of imix entries leads to invalid access to the pktdev->imixentries array because of the incorrect boundary check.
UBSAN: array-index-out-of-bounds in net/core/pktgen.c:874:24 index 20 is out of range for type 'imixpkt [20]' CPU: 2 PID: 1210 Comm: bash Not tainted 6.10.0-rc1 #121 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996) Call Trace: <TASK> dumpstacklvl lib/dumpstack.c:117 __ubsanhandleoutofbounds lib/ubsan.c:429 getimixentries net/core/pktgen.c:874 pktgenifwrite net/core/pktgen.c:1063 pdewrite fs/proc/inode.c:334 procregwrite fs/proc/inode.c:346 vfswrite fs/readwrite.c:593 ksyswrite fs/readwrite.c:644 dosyscall64 arch/x86/entry/common.c:83 entrySYSCALL64afterhwframe arch/x86/entry/entry64.S:130
Found by Linux Verification Center (linuxtesting.org) with SVACE.
[ fp: allow to fill the array completely; minor changelog cleanup ]
- References