In the Linux kernel, the following vulnerability has been resolved: net: qrtr: fix 32-bit integer overflow in qrtr_endpoint_post() qrtr…
CVE-2026-72298 · published 15 Aug 2026
How serious is it
- Severity: high, CVSS score 8.4 out of 10.
- No exploit prediction (EPSS) score yet.
- Not on the CISA list of exploited vulnerabilities.
- No public exploit in Exploit-DB.
Is your app affected by CVE-2026-72298?
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Who is affected
- Linux Linux: 5.13
How to check
- Find out whether you run the affected product and which version, then compare it with the versions above.
How to fix
Copies a prompt for Claude Code, Cursor or Codex that asks it to check whether you run this product.
- Apply the vendor's update or mitigation from the references below. If there is none yet, limit exposure of the affected service until there is.
- If a vulnerable version was live, check your logs and rotate the secrets that server could read.
The advisory
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.
Check your whole app
Dependencies are only half of it. Free and read-only: before you push, run npx shippable-dev scan localhost:3000 in your project folder, no account needed. For your live app, you prove it's yours with a one-line tag first.
References
- git.kernel.org/stable/c/20054869770c7df060c5ecee3e8bbf9029c47191
- git.kernel.org/stable/c/22100a8f73d4ae4f17697dae93d4e2e1d283a6ec
- git.kernel.org/stable/c/242408b5b763c01288adf3113cbce84378a76e1a
- git.kernel.org/stable/c/3665e644ea081c4624a1637023b0de3b29f4ae04
- git.kernel.org/stable/c/689b7267f8632b4661879dc323e26ebb60978afb
- git.kernel.org/stable/c/7f72c285f6d3bf63968a0344beee8ab1b370198b
- git.kernel.org/stable/c/b609f7f46916c6b05585ca82455077198a23770f
- git.kernel.org/stable/c/d0597074e99731fdad5593e4f6d056a3866f2cab
Merged from NVD. Last updated 23 Oct 2026. All vulnerabilities · RSS · JSON