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CVE-2024-26665— tunnels: fix out of bounds access when building IPv6 PMTU error

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于构建IPv6 PMTU时存在越界访问漏洞。

CVSS 9.1 · Critical EPSS 0.68% · P51

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 14

VendorProduct Version RangeStatus
Linux Linux 4cb47a8644cc9eb8ec81190a50e79e6530d0297f< e77bf828f1ca1c47fcff58bdc26b60a9d3dfbe1d affected
4cb47a8644cc9eb8ec81190a50e79e6530d0297f< d964dd1bc1452594b4207d9229c157d9386e5d8a affected
4cb47a8644cc9eb8ec81190a50e79e6530d0297f< e37cde7a5716466ff2a76f7f27f0a29b05b9a732 affected
4cb47a8644cc9eb8ec81190a50e79e6530d0297f< 510c869ffa4068c5f19ff4df51d1e2f3a30aaac1 affected
4cb47a8644cc9eb8ec81190a50e79e6530d0297f< 7dc9feb8b1705cf00de20563b6bc4831f4c99dab affected
4cb47a8644cc9eb8ec81190a50e79e6530d0297f< d75abeec401f8c86b470e7028a13fcdc87e5dd06 affected
5.9 affected
< 5.9 unaffected
… +6 more rows
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I. Basic Information for CVE-2024-26665

Vulnerability Information
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Vulnerability Title
tunnels: fix out of bounds access when building IPv6 PMTU error
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: tunnels: fix out of bounds access when building IPv6 PMTU error If the ICMPv6 error is built from a non-linear skb we get the following splat, BUG: KASAN: slab-out-of-bounds in do_csum+0x220/0x240 Read of size 4 at addr ffff88811d402c80 by task netperf/820 CPU: 0 PID: 820 Comm: netperf Not tainted 6.8.0-rc1+ #543 ... kasan_report+0xd8/0x110 do_csum+0x220/0x240 csum_partial+0xc/0x20 skb_tunnel_check_pmtu+0xeb9/0x3280 vxlan_xmit_one+0x14c2/0x4080 vxlan_xmit+0xf61/0x5c00 dev_hard_start_xmit+0xfb/0x510 __dev_queue_xmit+0x7cd/0x32a0 br_dev_queue_push_xmit+0x39d/0x6a0 Use skb_checksum instead of csum_partial who cannot deal with non-linear SKBs.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于构建IPv6 PMTU时存在越界访问漏洞。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 4cb47a8644cc9eb8ec81190a50e79e6530d0297f ~ e77bf828f1ca1c47fcff58bdc26b60a9d3dfbe1d -
Linux Linux 5.9 -

II. Public POCs for CVE-2024-26665

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III. Intelligence Information for CVE-2024-26665

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Mailing List Discussions for CVE-2024-26665 (1)

Other References for CVE-2024-26665 (6)

Same Patch Batch · Linux · 2024-04-02 · 35 CVEs total

CVE-2023-52636 8.2 HIGH libceph: just wait for more data to be available on the socket
CVE-2024-26656 7.8 HIGH drm/amdgpu: fix use-after-free bug
CVE-2024-26659 7.8 HIGH xhci: handle isoc Babble and Buffer Overrun events properly
CVE-2024-26663 7.8 HIGH tipc: Check the bearer type before calling tipc_udp_nl_bearer_add()
CVE-2024-26664 7.8 HIGH hwmon: (coretemp) Fix out-of-bounds memory access
CVE-2024-26666 7.1 HIGH wifi: mac80211: fix RCU use in TDLS fast-xmit
CVE-2024-26660 7.0 HIGH drm/amd/display: Implement bounds check for stream encoder creation in DCN301
CVE-2024-26673 netfilter: nft_ct: sanitize layer 3 and 4 protocol number in custom expectations
CVE-2023-52634 drm/amd/display: Fix disable_otg_wa logic
CVE-2024-26674 x86/lib: Revert to _ASM_EXTABLE_UA() for {get,put}_user() fixups
CVE-2024-26675 ppp_async: limit MRU to 64K
CVE-2024-26676 af_unix: Call kfree_skb() for dead unix_(sk)->oob_skb in GC.
CVE-2024-26677 rxrpc: Fix delayed ACKs to not set the reference serial number
CVE-2024-26678 x86/efistub: Use 1:1 file:memory mapping for PE/COFF .compat section
CVE-2024-26679 inet: read sk->sk_family once in inet_recv_error()
CVE-2024-26680 net: atlantic: Fix DMA mapping for PTP hwts ring
CVE-2024-26681 netdevsim: avoid potential loop in nsim_dev_trap_report_work()
CVE-2024-26682 wifi: mac80211: improve CSA/ECSA connection refusal
CVE-2024-26683 wifi: cfg80211: detect stuck ECSA element in probe resp
CVE-2024-26684 net: stmmac: xgmac: fix handling of DPP safety error for DMA channels

Showing top 20 of 35 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-26665

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