ksmbd: fix Out-of-Bounds Read in ksmbd_vfs_stream_read
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix Out-of-Bounds Read in ksmbd_vfs_stream_read An offset from client could be a negative value, It could lead to an out-of-bounds read from the stream_buf. Note that this issue is coming when setting 'vfs objects = streams_xattr parameter' in ksmbd.conf.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linux | Linux | 5.15 and later | 5.15.176, 6.1.120, 6.6.66, 6.12.5, 6.13 | Patch available | CNA |
- Linux VendorLinux Affected 5.15 and later Fixed in 5.15.176, 6.1.120, 6.6.66, 6.12.5, 6.13 Patch available CNA
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.15.176, 6.1.120, 6.6.66, 6.12.5, 6.13
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
Not affected: 4 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2024-56627
- 2026-10-03 Alias added: GHSA-7822-7h76-h235
- 2026-10-29 EPSS moved to the 50th–90th percentile
References
Patch 5
- https://git.kernel.org/stable/c/6bd1bf0e8c42f10a9a9679a4c103a9032d30594d
- https://git.kernel.org/stable/c/de4d790dcf53be41736239d7ee63849a16ff5d10
- https://git.kernel.org/stable/c/27de4295522e9a33e4a3fc72f7b8193df9eebe41
- https://git.kernel.org/stable/c/81eed631935f2c52cdaf6691c6d48e0b06e8ad73
- https://git.kernel.org/stable/c/fc342cf86e2dc4d2edb0fc2ff5e28b6c7845adb9
More Linux Kernel vulnerabilities
- TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
- TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
- TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
- TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
- TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
- TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
Sources
- CVE-2024-56627 · CVE Program
- CVE-2024-56627 · NVD
- FIRST EPSS
- GHSA-7822-7h76-h235 · GitHub Advisory Database · CC BY 4.0
- CVE-2024-56627 · Red Hat security data · CC BY 4.0
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