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CVE-2024-35841— net: tls, fix WARNIING in __sk_msg_free

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 net:tls 模块存在漏洞。

AI Predicted 5.5 Difficulty: Moderate EPSS 0.22% · P11

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 8

VendorProduct Version RangeStatus
Linux Linux fe1e81d4f73b6cbaed4fcc476960d26770642842< 02e368eb1444a4af649b73cbe2edd51780511d86 affected
fe1e81d4f73b6cbaed4fcc476960d26770642842< 294e7ea85f34748f04e5f3f9dba6f6b911d31aa8 affected
fe1e81d4f73b6cbaed4fcc476960d26770642842< dc9dfc8dc629e42f2234e3327b75324ffc752bc9 affected
6.5 affected
< 6.5 unaffected
6.6.14≤ 6.6.* unaffected
6.7.2≤ 6.7.* unaffected
6.8≤ * unaffected
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I. Basic Information for CVE-2024-35841

Vulnerability Information
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Vulnerability Title
net: tls, fix WARNIING in __sk_msg_free
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net: tls, fix WARNIING in __sk_msg_free A splice with MSG_SPLICE_PAGES will cause tls code to use the tls_sw_sendmsg_splice path in the TLS sendmsg code to move the user provided pages from the msg into the msg_pl. This will loop over the msg until msg_pl is full, checked by sk_msg_full(msg_pl). The user can also set the MORE flag to hint stack to delay sending until receiving more pages and ideally a full buffer. If the user adds more pages to the msg than can fit in the msg_pl scatterlist (MAX_MSG_FRAGS) we should ignore the MORE flag and send the buffer anyways. What actually happens though is we abort the msg to msg_pl scatterlist setup and then because we forget to set 'full record' indicating we can no longer consume data without a send we fallthrough to the 'continue' path which will check if msg_data_left(msg) has more bytes to send and then attempts to fit them in the already full msg_pl. Then next iteration of sender doing send will encounter a full msg_pl and throw the warning in the syzbot report. To fix simply check if we have a full_record in splice code path and if not send the msg regardless of MORE flag.
Source: CVE Program / CVE List V5
CVSS Information
N/A
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 net:tls 模块存在漏洞。
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 fe1e81d4f73b6cbaed4fcc476960d26770642842 ~ 02e368eb1444a4af649b73cbe2edd51780511d86 -
Linux Linux 6.5 -

II. Public POCs for CVE-2024-35841

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III. Intelligence Information for CVE-2024-35841

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Other References for CVE-2024-35841 (3)

Same Patch Batch · Linux · 2024-05-17 · 135 CVEs total

CVE-2023-52687 9.8 CRITICAL crypto: safexcel - Add error handling for dma_map_sg() calls
CVE-2024-35843 8.8 HIGH iommu/vt-d: Use device rbtree in iopf reporting path
CVE-2024-35804 8.8 HIGH KVM: x86: Mark target gfn of emulated atomic instruction as dirty
CVE-2024-35811 8.8 HIGH wifi: brcmfmac: Fix use-after-free bug in brcmf_cfg80211_detach
CVE-2024-27416 8.8 HIGH Bluetooth: hci_event: Fix handling of HCI_EV_IO_CAPA_REQUEST
CVE-2024-27415 8.8 HIGH netfilter: bridge: confirm multicast packets before passing them up the stack
CVE-2024-35856 8.8 HIGH Bluetooth: btusb: mediatek: Fix double free of skb in coredump
CVE-2024-35834 8.2 HIGH xsk: recycle buffer in case Rx queue was full
CVE-2024-27404 8.2 HIGH mptcp: fix data races on remote_id
CVE-2023-52669 8.2 HIGH crypto: s390/aes - Fix buffer overread in CTR mode
CVE-2024-35789 8.0 HIGH wifi: mac80211: check/clear fast rx for non-4addr sta VLAN changes
CVE-2024-35793 7.8 HIGH debugfs: fix wait/cancellation handling during remove
CVE-2024-35810 7.8 HIGH drm/vmwgfx: Fix the lifetime of the bo cursor memory
CVE-2024-35808 7.8 HIGH md/dm-raid: don't call md_reap_sync_thread() directly
CVE-2023-52667 7.8 HIGH net/mlx5e: fix a potential double-free in fs_any_create_groups
CVE-2024-35798 7.8 HIGH btrfs: fix race in read_extent_buffer_pages()
CVE-2024-35839 7.8 HIGH netfilter: bridge: replace physindev with physinif in nf_bridge_info
CVE-2024-35835 7.8 HIGH net/mlx5e: fix a double-free in arfs_create_groups
CVE-2024-27403 7.8 HIGH netfilter: nft_flow_offload: reset dst in route object after setting up flow
CVE-2024-35791 7.8 HIGH KVM: SVM: Flush pages under kvm->lock to fix UAF in svm_register_enc_region()

Showing top 20 of 135 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-35841

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