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CVE-2026-90417

UnknownEPSS 0.21%

Last modified

CVE-2026-90417 is a vulnerability of currently unknown severity. In the Linux kernel, the following vulnerability has been resolved: RDMA/cxgb4: Fix dereg_skb leak and double free in write_tpt_entry() When the device is in the fatal error state, write_tpt_entry() returns -EIO before handing the caller's preallocated skb to the transmit path; its allocation-failure returns do the same. c4iw_dereg_mr() ignores the error and frees mhp, leaking mhp->dereg_skb. EPSS estimates a 0.21% chance of exploitation in the next 30 days.

Description

In the Linux kernel, the following vulnerability has been resolved: RDMA/cxgb4: Fix dereg_skb leak and double free in write_tpt_entry() When the device is in the fatal error state, write_tpt_entry() returns -EIO before handing the caller's preallocated skb to the transmit path; its allocation-failure returns do the same. c4iw_dereg_mr() ignores the error and frees mhp, leaking mhp->dereg_skb. c4iw_get_dma_mr() instead frees the skb a second time after dereg_mem() already consumed it, a double free. Make write_tpt_entry() the sole owner of a non-NULL skb, freeing it on every return preceding handoff to c4iw_ofld_send(): fatal error, tpt and stag allocation failure. c4iw_ofld_send() consumes the skb on success and error alike, so drop the redundant kfree_skb() in c4iw_get_dma_mr() after dereg_mem().

Metrics

EPSS Probability
0.21%

11.7th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

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

VendorProductVersions
LinuxLinux>= 0f8ab0b6e91b4d5302ceee5ec12ce54d81297635, < 26c6e9bc0b907b880c5d8486291f0452c8227fbe; >= 0f8ab0b6e91b4d5302ceee5ec12ce54d81297635, < 68c1d2c085f205e8a5338bc3d3304f897deca4d9; >= 0f8ab0b6e91b4d5302ceee5ec12ce54d81297635, < 379cf06e6fe34af980064c6ccaf15d8e26ec4a42; >= 0f8ab0b6e91b4d5302ceee5ec12ce54d81297635, < 2fcd26f4680143e9ec477069530548dbe20fce6f; >= 0f8ab0b6e91b4d5302ceee5ec12ce54d81297635, < 6b15fc9bc117fb6597fa1c2cc30284aafe71101c; >= 0f8ab0b6e91b4d5302ceee5ec12ce54d81297635, < 373f3716a2de7adc739269ebb4d87e5bf4dc180c
LinuxLinux4.8

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-90417?
In the Linux kernel, the following vulnerability has been resolved: RDMA/cxgb4: Fix dereg_skb leak and double free in write_tpt_entry() When the device is in the fatal error state, write_tpt_entry() returns -EIO before handing the caller's preallocated skb to the transmit path; its allocation-failure returns do the same. c4iw_dereg_mr() ignores the error and frees mhp, leaking mhp->dereg_skb. c4iw_get_dma_mr() instead frees the skb a second time after dereg_mem() already consumed it, a double free. Make write_tpt_entry() the sole owner of a non-NULL skb, freeing it on every return preceding handoff to c4iw_ofld_send(): fatal error, tpt and stag allocation failure. c4iw_ofld_send() consumes the skb on success and error alike, so drop the redundant kfree_skb() in c4iw_get_dma_mr() after dereg_mem().
How severe is CVE-2026-90417?
Severity scoring for CVE-2026-90417 is pending analysis. The EPSS model estimates a 0.21% probability of exploitation in the next 30 days.
How do I fix CVE-2026-90417?
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