CVE-2026-72298net: qrtr: fix 32-bit integer overflow in qrtr_endpoint_post()
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: net: qrtr: fix 32-bit integer overflow in qrtr_endpoint_post() qrtr_endpoint_post() validates an incoming packet with if (!size || len != ALIGN(size, 4) + hdrlen) goto err; where size comes from the wire. On 32-bit, size_t is 32 bits and ALIGN(size, 4) wraps to 0 for size >= 0xfffffffd, so the check passes and skb_put_data(skb, data + hdrlen, size) writes past the hdrlen-sized skb and oopses the kernel. 64-bit is unaffected. This is the 32-bit residual of ad9d24c9429e2 ("net: qrtr: fix OOB Read in qrtr_endpoint_post"), which fixed only the 64-bit case. Reject any size that cannot fit the buffer before the ALIGN.
- CVSS
- 8.4 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 960b08dd36de1e341e3eb43d1c547513e338f4f8 before 3665e644ea081c4624a1637023b0de3b29f4ae04; from ad9d24c9429e2159d1e279dc3a83191ccb4daf1d before b609f7f46916c6b05585ca82455077198a23770f; from ad9d24c9429e2159d1e279dc3a83191ccb4daf1d before 242408b5b763c01288adf3113cbce84378a76e1a; from ad9d24c9429e2159d1e279dc3a83191ccb4daf1d before d0597074e99731fdad5593e4f6d056a3866f2cab; from ad9d24c9429e2159d1e279dc3a83191ccb4daf1d before 689b7267f8632b4661879dc323e26ebb60978afb; from ad9d24c9429e2159d1e279dc3a83191ccb4daf1d before 22100a8f73d4ae4f17697dae93d4e2e1d283a6ec; from ad9d24c9429e2159d1e279dc3a83191ccb4daf1d before 7f72c285f6d3bf63968a0344beee8ab1b370198b; from ad9d24c9429e2159d1e279dc3a83191ccb4daf1d before 20054869770c7df060c5ecee3e8bbf9029c47191; and 7 more ranges | CNA record |
References
- https://git.kernel.org/stable/c/3665e644ea081c4624a1637023b0de3b29f4ae04
- https://git.kernel.org/stable/c/b609f7f46916c6b05585ca82455077198a23770f
- https://git.kernel.org/stable/c/242408b5b763c01288adf3113cbce84378a76e1a
- https://git.kernel.org/stable/c/d0597074e99731fdad5593e4f6d056a3866f2cab
- https://git.kernel.org/stable/c/689b7267f8632b4661879dc323e26ebb60978afb
- https://git.kernel.org/stable/c/22100a8f73d4ae4f17697dae93d4e2e1d283a6ec
- https://git.kernel.org/stable/c/7f72c285f6d3bf63968a0344beee8ab1b370198b
- https://git.kernel.org/stable/c/20054869770c7df060c5ecee3e8bbf9029c47191
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.