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CVE-2026-72298

HIGHCVSS 8.4/10EPSS 0.21%

Last modified

CVE-2026-72298 is a high-severity vulnerability rated 8.4/10 on the CVSS scale. 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. EPSS estimates a 0.21% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1
8.4/10

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
0.21%

11.6th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 960b08dd36de1e341e3eb43d1c547513e338f4f8, < 3665e644ea081c4624a1637023b0de3b29f4ae04; >= ad9d24c9429e2159d1e279dc3a83191ccb4daf1d, < b609f7f46916c6b05585ca82455077198a23770f; >= ad9d24c9429e2159d1e279dc3a83191ccb4daf1d, < 242408b5b763c01288adf3113cbce84378a76e1a; >= ad9d24c9429e2159d1e279dc3a83191ccb4daf1d, < d0597074e99731fdad5593e4f6d056a3866f2cab; >= ad9d24c9429e2159d1e279dc3a83191ccb4daf1d, < 689b7267f8632b4661879dc323e26ebb60978afb; >= ad9d24c9429e2159d1e279dc3a83191ccb4daf1d, < 22100a8f73d4ae4f17697dae93d4e2e1d283a6ec; >= ad9d24c9429e2159d1e279dc3a83191ccb4daf1d, < 7f72c285f6d3bf63968a0344beee8ab1b370198b; >= ad9d24c9429e2159d1e279dc3a83191ccb4daf1d, < 20054869770c7df060c5ecee3e8bbf9029c47191; f8111c0d7ed42ede41a3d0d393b104de0730a8a6; 26b8d10703a9be45d6097946b2b4011f7dd2c56f; 19892ab9c9d838e2e5a7744d36e4bb8b7c3292fe; >= 5.10.46, < 5.10.261; >= 4.19.196, < 4.20; >= 5.4.128, < 5.5; >= 5.12.13, < 5.13
LinuxLinux5.13

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-72298?
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.
How severe is CVE-2026-72298?
CVE-2026-72298 has a CVSS score of 8.4/10 (HIGH severity). The EPSS model estimates a 0.21% probability of exploitation in the next 30 days.
How do I fix CVE-2026-72298?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST