Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2024-42254— io_uring: fix error pbuf checking

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io_alloc_pbuf_ring函数中NULL与IS_ERR不一致的错误处理。

AI Predicted 6.5 Difficulty: Moderate EPSS 0.21% · P11

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 7

VendorProduct Version RangeStatus
Linux Linux 46b1b3d81a7e99574e1a2f914086bc2fe382d79d< 78aefac7efdffddf7889405b7c08e6e0f030fa35 affected
87585b05757dc70545efb434669708d276125559< 68d19af95a353f5e2b021602180b65b303eba99d affected
87585b05757dc70545efb434669708d276125559< bcc87d978b834c298bbdd9c52454c5d0a946e97e affected
6.10 affected
< 6.10 unaffected
6.10.1≤ 6.10.* unaffected
6.11≤ * unaffected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2024-42254

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
io_uring: fix error pbuf checking
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: io_uring: fix error pbuf checking Syz reports a problem, which boils down to NULL vs IS_ERR inconsistent error handling in io_alloc_pbuf_ring(). KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] RIP: 0010:__io_remove_buffers+0xac/0x700 io_uring/kbuf.c:341 Call Trace: <TASK> io_put_bl io_uring/kbuf.c:378 [inline] io_destroy_buffers+0x14e/0x490 io_uring/kbuf.c:392 io_ring_ctx_free+0xa00/0x1070 io_uring/io_uring.c:2613 io_ring_exit_work+0x80f/0x8a0 io_uring/io_uring.c:2844 process_one_work kernel/workqueue.c:3231 [inline] process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312 worker_thread+0x86d/0xd40 kernel/workqueue.c:3390 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
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io_alloc_pbuf_ring函数中NULL与IS_ERR不一致的错误处理。
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 46b1b3d81a7e99574e1a2f914086bc2fe382d79d ~ 78aefac7efdffddf7889405b7c08e6e0f030fa35 -
Linux Linux 6.10 -

II. Public POCs for CVE-2024-42254

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2024-42254

请登录查看更多情报信息。

Patches & Fixes for CVE-2024-42254 (2)

Same Patch Batch · Linux · 2024-08-08 · 7 CVEs total

CVE-2024-42253 7.8 HIGH gpio: pca953x: fix pca953x_irq_bus_sync_unlock race
CVE-2024-42256 7.5 HIGH cifs: Fix server re-repick on subrequest retry
CVE-2024-42257 ext4: use memtostr_pad() for s_volume_name
CVE-2024-42255 tpm: Use auth only after NULL check in tpm_buf_check_hmac_response()
CVE-2024-42252 closures: Change BUG_ON() to WARN_ON()
CVE-2024-42251 mm: page_ref: remove folio_try_get_rcu()

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-42254

No comments yet

Leave a comment