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CVE-2026-80790

Unknown

Last modified

CVE-2026-80790 is a vulnerability of currently unknown severity. In the Linux kernel, the following vulnerability has been resolved: nvmet-fc: fix invalid free in LS IOD error path nvmet_fc_alloc_ls_iodlist() advances iod while initializing the LS IOD array. If an rqstbuf allocation or response buffer DMA mapping fails, the unwind loop decrements iod past the start of the array.

Description

In the Linux kernel, the following vulnerability has been resolved: nvmet-fc: fix invalid free in LS IOD error path nvmet_fc_alloc_ls_iodlist() advances iod while initializing the LS IOD array. If an rqstbuf allocation or response buffer DMA mapping fails, the unwind loop decrements iod past the start of the array. The final kfree(iod) therefore frees an address before the allocated object. This can be reproduced with nvme-fcloop and failslab by setting fail-nth to 6 before creating a target port. KASAN reports: BUG: KASAN: invalid-free in nvmet_fc_register_targetport Free of addr ffff88816cf8ff48 by task nvmet_fail_nth/9552 Free the original allocation base stored in tgtport->iod instead. With this fix applied, the same sysfs write with fail-nth=6 returns -ENOMEM without any KASAN report.

Affected Software

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

VendorProductVersions
LinuxLinux>= c53432030d86429dc9fe5adc3d68cb9d1343b0b2, < b189c6e408896ccc23d2e76d7738847cdebf1532; >= c53432030d86429dc9fe5adc3d68cb9d1343b0b2, < 449e9c4f8db84ad9d9bb288029b230bcf590faa2; >= c53432030d86429dc9fe5adc3d68cb9d1343b0b2, < 1a8f007faefe8c226ec65896589f8d59b0a8d5a5; >= c53432030d86429dc9fe5adc3d68cb9d1343b0b2, < d094582cce9c08516d714e7436a8f3b9211dda90; >= c53432030d86429dc9fe5adc3d68cb9d1343b0b2, < 371fb1bf902adaa59be32bd7e904a5317e604fd0; >= c53432030d86429dc9fe5adc3d68cb9d1343b0b2, < 8bce9cd08aae4283badf8ddc11fbb6f57b75a81e; >= c53432030d86429dc9fe5adc3d68cb9d1343b0b2, < bb9489f0dce58da730d3479588d6710d7a2c1b45; >= c53432030d86429dc9fe5adc3d68cb9d1343b0b2, < 94334ea92f4d7535f66f86e33681efa94827eddc; >= c53432030d86429dc9fe5adc3d68cb9d1343b0b2, < ba98d6796d12258e837ece065d2ecb59d76ce4ff
LinuxLinux4.10

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-80790?
In the Linux kernel, the following vulnerability has been resolved: nvmet-fc: fix invalid free in LS IOD error path nvmet_fc_alloc_ls_iodlist() advances iod while initializing the LS IOD array. If an rqstbuf allocation or response buffer DMA mapping fails, the unwind loop decrements iod past the start of the array. The final kfree(iod) therefore frees an address before the allocated object. This can be reproduced with nvme-fcloop and failslab by setting fail-nth to 6 before creating a target port. KASAN reports: BUG: KASAN: invalid-free in nvmet_fc_register_targetport Free of addr ffff88816cf8ff48 by task nvmet_fail_nth/9552 Free the original allocation base stored in tgtport->iod instead. With this fix applied, the same sysfs write with fail-nth=6 returns -ENOMEM without any KASAN report.
How severe is CVE-2026-80790?
Severity scoring for CVE-2026-80790 is pending analysis.
How do I fix CVE-2026-80790?
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