Medium severity5.5NVD Advisory· Published Oct 21, 2024· Updated May 12, 2026
CVE-2024-49948
CVE-2024-49948
Description
In the Linux kernel, the following vulnerability has been resolved:
net: add more sanity checks to qdisc_pkt_len_init()
One path takes care of SKB_GSO_DODGY, assuming skb->len is bigger than hdr_len.
virtio_net_hdr_to_skb() does not fully dissect TCP headers, it only make sure it is at least 20 bytes.
It is possible for an user to provide a malicious 'GSO' packet, total length of 80 bytes.
- 20 bytes of IPv4 header
- 60 bytes TCP header
- a small gso_size like 8
virtio_net_hdr_to_skb() would declare this packet as a normal GSO packet, because it would see 40 bytes of payload, bigger than gso_size.
We need to make detect this case to not underflow qdisc_skb_cb(skb)->pkt_len.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
83- osv-coords79 versionspkg:deb/ubuntu/linux@6.11.0-18.18?arch=source&distro=oracularpkg:deb/ubuntu/linux-aws@6.11.0-1009.10?arch=source&distro=oracularpkg:deb/ubuntu/linux-azure@6.11.0-1009.9?arch=source&distro=oracularpkg:deb/ubuntu/linux-gcp@6.11.0-1009.9?arch=source&distro=oracularpkg:deb/ubuntu/linux-lowlatency@6.11.0-1010.11?arch=source&distro=oracularpkg:deb/ubuntu/linux-oracle@6.11.0-1011.12?arch=source&distro=oracularpkg:deb/ubuntu/linux-raspi@6.11.0-1008.8?arch=source&distro=oracularpkg:deb/ubuntu/linux-realtime@6.11.0-1005.5?arch=source&distro=oracularpkg:rpm/opensuse/dtb-aarch64&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-64kb&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-azure&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-debug&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-default-base&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-default&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-docs&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-kvmsmall&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-obs-build&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-obs-qa&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-rt_debug&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-rt&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-source-azure&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-source&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-source&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/kernel-source-longterm&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/kernel-source-rt&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-syms-azure&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-syms&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-syms-rt&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-zfcpdump&distro=openSUSE%20Leap%2015.6pkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP6pkg:rpm/suse/kernel-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP6pkg:rpm/suse/kernel-coco_debug&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Confidential%20Computing%20Technical%20Preview%2015%20SP6pkg:rpm/suse/kernel-coco&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Confidential%20Computing%20Technical%20Preview%2015%20SP6pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP6pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Micro%206.0pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Micro%206.1pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Availability%20Extension%2015%20SP6pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2012%20SP5pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP6pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP6pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Legacy%2015%20SP6pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5-LTSSpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%20LTSS%20Extended%20Security%2012%20SP5pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP6pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Micro%206.0pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Micro%206.1pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP6pkg:rpm/suse/kernel-kvmsmall&distro=SUSE%20Linux%20Micro%206.0pkg:rpm/suse/kernel-kvmsmall&distro=SUSE%20Linux%20Micro%206.1pkg:rpm/suse/kernel-livepatch-MICRO-6-0-RT_Update_5&distro=SUSE%20Linux%20Micro%206.0pkg:rpm/suse/kernel-livepatch-MICRO-6-0-RT_Update_5&distro=SUSE%20Linux%20Micro%206.1pkg:rpm/suse/kernel-livepatch-MICRO-6-0_Update_5&distro=SUSE%20Linux%20Micro%206.0pkg:rpm/suse/kernel-livepatch-MICRO-6-0_Update_5&distro=SUSE%20Linux%20Micro%206.1pkg:rpm/suse/kernel-livepatch-SLE15-SP6-RT_Update_8&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP6pkg:rpm/suse/kernel-livepatch-SLE15-SP6_Update_8&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP6pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP6pkg:rpm/suse/kernel-rt_debug&distro=SUSE%20Real%20Time%20Module%2015%20SP6pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Micro%206.0pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Micro%206.1pkg:rpm/suse/kernel-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP6pkg:rpm/suse/kernel-source-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP6pkg:rpm/suse/kernel-source-coco&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Confidential%20Computing%20Technical%20Preview%2015%20SP6pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP6pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP6pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5-LTSSpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%20LTSS%20Extended%20Security%2012%20SP5pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Micro%206.0pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Micro%206.1pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Linux%20Micro%206.0pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Linux%20Micro%206.1pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP6pkg:rpm/suse/kernel-syms-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP6pkg:rpm/suse/kernel-syms-coco&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Confidential%20Computing%20Technical%20Preview%2015%20SP6pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP6pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5-LTSSpkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%20LTSS%20Extended%20Security%2012%20SP5pkg:rpm/suse/kernel-syms-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP6pkg:rpm/suse/kernel-zfcpdump&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP6pkg:rpm/suse/kgraft-patch-SLE12-SP5_Update_65&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2012%20SP5
< 6.11.0-18.18+ 78 more
- (no CPE)range: < 6.11.0-18.18
- (no CPE)range: < 6.11.0-1009.10
- (no CPE)range: < 6.11.0-1009.9
- (no CPE)range: < 6.11.0-1009.9
- (no CPE)range: < 6.11.0-1010.11
- (no CPE)range: < 6.11.0-1011.12
- (no CPE)range: < 6.11.0-1008.8
- (no CPE)range: < 6.11.0-1005.5
- (no CPE)range: < 6.4.0-150600.23.38.1
- (no CPE)range: < 6.4.0-150600.23.38.1
- (no CPE)range: < 6.4.0-150600.8.26.1
- (no CPE)range: < 6.4.0-150600.23.38.1
- (no CPE)range: < 6.4.0-150600.23.38.1.150600.12.16.2
- (no CPE)range: < 6.4.0-150600.23.38.1
- (no CPE)range: < 6.4.0-150600.23.38.1
- (no CPE)range: < 6.4.0-150600.23.38.1
- (no CPE)range: < 6.4.0-150600.23.38.1
- (no CPE)range: < 6.4.0-150600.23.38.1
- (no CPE)range: < 6.4.0-150600.10.26.1
- (no CPE)range: < 6.4.0-150600.10.26.1
- (no CPE)range: < 6.4.0-150600.8.26.1
- (no CPE)range: < 6.4.0-150600.23.38.1
- (no CPE)range: < 6.11.8-1.1
- (no CPE)range: < 6.12.11-1.1
- (no CPE)range: < 6.4.0-150600.10.26.1
- (no CPE)range: < 6.4.0-150600.8.26.1
- (no CPE)range: < 6.4.0-150600.23.38.1
- (no CPE)range: < 6.4.0-150600.10.26.1
- (no CPE)range: < 6.4.0-150600.23.38.1
- (no CPE)range: < 6.4.0-150600.23.38.1
- (no CPE)range: < 6.4.0-150600.8.26.1
- (no CPE)range: < 6.4.0-15061.15.coco15sp6.1
- (no CPE)range: < 6.4.0-15061.15.coco15sp6.1
- (no CPE)range: < 6.4.0-150600.23.38.1.150600.12.16.2
- (no CPE)range: < 6.4.0-24.1.21.4
- (no CPE)range: < 6.4.0-24.1.21.4
- (no CPE)range: < 6.4.0-150600.23.38.1
- (no CPE)range: < 4.12.14-122.247.1
- (no CPE)range: < 6.4.0-150600.23.38.1
- (no CPE)range: < 6.4.0-150600.23.38.1
- (no CPE)range: < 6.4.0-150600.23.38.1
- (no CPE)range: < 4.12.14-122.247.1
- (no CPE)range: < 4.12.14-122.247.1
- (no CPE)range: < 6.4.0-150600.23.38.1
- (no CPE)range: < 6.4.0-25.1
- (no CPE)range: < 6.4.0-25.1
- (no CPE)range: < 6.4.0-150600.23.38.1
- (no CPE)range: < 6.4.0-25.1
- (no CPE)range: < 6.4.0-25.1
- (no CPE)range: < 1-1.1
- (no CPE)range: < 1-1.1
- (no CPE)range: < 1-1.2
- (no CPE)range: < 1-1.2
- (no CPE)range: < 1-150600.1.3.1
- (no CPE)range: < 1-150600.13.3.2
- (no CPE)range: < 6.4.0-150600.23.38.1
- (no CPE)range: < 6.4.0-150600.10.26.1
- (no CPE)range: < 6.4.0-25.1
- (no CPE)range: < 6.4.0-25.1
- (no CPE)range: < 6.4.0-150600.10.26.1
- (no CPE)range: < 6.4.0-150600.8.26.1
- (no CPE)range: < 6.4.0-15061.15.coco15sp6.1
- (no CPE)range: < 6.4.0-150600.23.38.1
- (no CPE)range: < 6.4.0-150600.23.38.1
- (no CPE)range: < 4.12.14-122.247.1
- (no CPE)range: < 4.12.14-122.247.1
- (no CPE)range: < 6.4.0-25.1
- (no CPE)range: < 6.4.0-25.1
- (no CPE)range: < 6.4.0-25.1
- (no CPE)range: < 6.4.0-25.1
- (no CPE)range: < 6.4.0-150600.10.26.1
- (no CPE)range: < 6.4.0-150600.8.26.1
- (no CPE)range: < 6.4.0-15061.15.coco15sp6.1
- (no CPE)range: < 6.4.0-150600.23.38.1
- (no CPE)range: < 4.12.14-122.247.1
- (no CPE)range: < 4.12.14-122.247.1
- (no CPE)range: < 6.4.0-150600.10.26.1
- (no CPE)range: < 6.4.0-150600.23.38.1
- (no CPE)range: < 1-8.3.1
Patches
Vulnerability mechanics
References
14- git.kernel.org/stable/c/1eebe602a8d8264a12e35e39d0645fa88dbbacddnvdPatch
- git.kernel.org/stable/c/2415f465730e48b6e38da1c7c097317bf5dd2d20nvdPatch
- git.kernel.org/stable/c/27a8fabc54d2f960d47bdfbebf2bdc6e8a92a4c4nvdPatch
- git.kernel.org/stable/c/473426a1d53a68dd1e718e6cd00d57936993fa6cnvdPatch
- git.kernel.org/stable/c/566a931a1436d0e0ad13708ea55479b95426213cnvdPatch
- git.kernel.org/stable/c/9b0ee571d20a238a22722126abdfde61f1b2bdd0nvdPatch
- git.kernel.org/stable/c/ab9a9a9e9647392a19e7a885b08000e89c86b535nvdPatch
- git.kernel.org/stable/c/d7d1a28f5dd57b4d83def876f8d7b4403bd37df9nvdPatch
- git.kernel.org/stable/c/ff1c3cadcf405ab37dd91418a62a7acecf3bc5e2nvdPatch
- cert-portal.siemens.com/productcert/html/ssa-265688.htmlnvd
- cert-portal.siemens.com/productcert/html/ssa-355557.htmlnvd
- cert-portal.siemens.com/productcert/html/ssa-398330.htmlnvd
- lists.debian.org/debian-lts-announce/2025/01/msg00001.htmlnvd
- lists.debian.org/debian-lts-announce/2025/03/msg00002.htmlnvd
News mentions
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