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Review reviewHigh

CVE-2026-64550

Linux

In the Linux kernel, the following vulnerability has been resolved: net: qualcomm: rmnet: validate MAP frame length before ingress parsing When ingress deaggregation is disabled, rmnet_map_ingress_handler() passes the skb straight to __rmnet_map_ingress_handler(), skipping the length validation that rmnet_map_deaggregate() performs on the aggregated path. The parser then dereferences the MAP header and csum header/trailer based on the on-wire pkt_len without checking skb->len, so a short frame is read out of bounds: BUG: KASAN: slab-out-of-bounds in rmnet_map_checksum_downlink_packet Read o...

CVSS
7.3
EPSS
-
- percentile
CISA KEV
Not listed
Published
2026.07.28
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability-
Technical severityCVSS 7.3

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: net: qualcomm: rmnet: validate MAP frame length before ingress parsing When ingress deaggregation is disabled, rmnet_map_ingress_handler() passes the skb straight to __rmnet_map_ingress_handler(), skipping the length validation that rmnet_map_deaggregate() performs on the aggregated path. The parser then dereferences the MAP header and csum header/trailer based on the on-wire pkt_len without checking skb->len, so a short frame is read out of bounds: BUG: KASAN: slab-out-of-bounds in rmnet_map_checksum_downlink_packet Read o...

Affected product and versions

Product
Linux
Affected versions
>= ceed73a2cf4aff2921802aa3d21d45280677547d < ed25befc8c36f896b5878f9078faddb67fd7e2d0, >= ceed73a2cf4aff2921802aa3d21d45280677547d < a54d76d176e50d2fdbd39b7231efe256170339e4, >= ceed73a2cf4aff2921802aa3d21d45280677547d < 00f4c366dbca16a40772c3b7ec2d8cba839e9724, >= ceed73a2cf4aff2921802aa3d21d45280677547d < 3868c3244369ab709a90c9aad7534d406009b824, >= ceed73a2cf4aff2921802aa3d21d45280677547d < 14eb0c9491385d5361a292ea4974aec0e6887299, >= ceed73a2cf4aff2921802aa3d21d45280677547d < 1b12612c367e4be9b0814c0468e7e687835315b4, >= ceed73a2cf4aff2921802aa3d21d45280677547d < 231a8a4b76cb1b1827b3b19d7b3603642f5aaaef, >= ceed73a2cf4aff2921802aa3d21d45280677547d < f0f1887a9e30712a1df03e152dce6fb91344b1f3, >= 4.14
Fixed versions
No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H
CWE
Not available
CVE-2026-64550 — Linux | SECUFOCUS NOW