CVE-2024-39508— io_uring/io-wq: Use set_bit() and test_bit() at worker->flags
Affected Version Matrix 8
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 2b188cc1bb857a9d4701ae59aa7768b5124e262e< ab702c3483db9046bab9f40306f1a28b22dbbdc0 | affected |
2b188cc1bb857a9d4701ae59aa7768b5124e262e< 1cbb0affb15470a9621267fe0a8568007553a4bf | affected | ||
2b188cc1bb857a9d4701ae59aa7768b5124e262e< 8a565304927fbd28c9f028c492b5c1714002cbab | affected | ||
5.1 | affected | ||
< 5.1 | unaffected | ||
6.6.35≤ 6.6.* | unaffected | ||
6.9.6≤ 6.9.* | unaffected | ||
6.10≤ * | unaffected |
Get alerts for future matching vulnerabilitiesLog in to subscribe
I. Basic Information for CVE-2024-39508
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View Shenlong Deep Dive ↗ Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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/io-wq: Use set_bit() and test_bit() at worker->flags
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: io_uring/io-wq: Use set_bit() and test_bit() at worker->flags Utilize set_bit() and test_bit() on worker->flags within io_uring/io-wq to address potential data races. The structure io_worker->flags may be accessed through various data paths, leading to concurrency issues. When KCSAN is enabled, it reveals data races occurring in io_worker_handle_work and io_wq_activate_free_worker functions. BUG: KCSAN: data-race in io_worker_handle_work / io_wq_activate_free_worker write to 0xffff8885c4246404 of 4 bytes by task 49071 on cpu 28: io_worker_handle_work (io_uring/io-wq.c:434 io_uring/io-wq.c:569) io_wq_worker (io_uring/io-wq.c:?) <snip> read to 0xffff8885c4246404 of 4 bytes by task 49024 on cpu 5: io_wq_activate_free_worker (io_uring/io-wq.c:? io_uring/io-wq.c:285) io_wq_enqueue (io_uring/io-wq.c:947) io_queue_iowq (io_uring/io_uring.c:524) io_req_task_submit (io_uring/io_uring.c:1511) io_handle_tw_list (io_uring/io_uring.c:1198) <snip> Line numbers against commit 18daea77cca6 ("Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm"). These races involve writes and reads to the same memory location by different tasks running on different CPUs. To mitigate this, refactor the code to use atomic operations such as set_bit(), test_bit(), and clear_bit() instead of basic "and" and "or" operations. This ensures thread-safe manipulation of worker flags. Also, move `create_index` to avoid holes in the structure.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
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_uring/io-wq 组件在处理工作线程时，存在潜在的数据竞争问题。
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
II. Public POCs for CVE-2024-39508
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2024-39508
请登录查看更多情报信息。
Other References for CVE-2024-39508 (3)
Same Patch Batch · Linux · 2024-07-12 · 122 CVEs total
| CVE-2024-40960 | ipv6: prevent possible NULL dereference in rt6_probe() | |
| CVE-2024-40975 | platform/x86: x86-android-tablets: Unregister devices in reverse order | |
| CVE-2024-40974 | powerpc/pseries: Enforce hcall result buffer validity and size | |
| CVE-2024-40973 | media: mtk-vcodec: potential null pointer deference in SCP | |
| CVE-2024-40972 | ext4: do not create EA inode under buffer lock | |
| CVE-2024-40970 | Avoid hw_desc array overrun in dw-axi-dmac | |
| CVE-2024-40971 | f2fs: remove clear SB_INLINECRYPT flag in default_options | |
| CVE-2024-40969 | f2fs: don't set RO when shutting down f2fs | |
| CVE-2024-40967 | serial: imx: Introduce timeout when waiting on transmitter empty | |
| CVE-2024-40968 | MIPS: Octeon: Add PCIe link status check | |
| CVE-2024-40966 | tty: add the option to have a tty reject a new ldisc | |
| CVE-2024-40965 | i2c: lpi2c: Avoid calling clk_get_rate during transfer | |
| CVE-2024-40964 | ALSA: hda: cs35l41: Possible null pointer dereference in cs35l41_hda_unbind() | |
| CVE-2024-40963 | mips: bmips: BCM6358: make sure CBR is correctly set | |
| CVE-2024-40961 | ipv6: prevent possible NULL deref in fib6_nh_init() | |
| CVE-2024-40962 | btrfs: zoned: allocate dummy checksums for zoned NODATASUM writes | |
| CVE-2024-40951 | ocfs2: fix NULL pointer dereference in ocfs2_abort_trigger() | |
| CVE-2024-40950 | mm: huge_memory: fix misused mapping_large_folio_support() for anon folios | |
| CVE-2024-40949 | mm: shmem: fix getting incorrect lruvec when replacing a shmem folio | |
| CVE-2024-40952 | ocfs2: fix NULL pointer dereference in ocfs2_journal_dirty() |
Showing top 20 of 122 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-46300
net: skbuff: preserve shared-frag marker during coalescing - CVE-2026-43503
net: skbuff: propagate shared-frag marker through frag-trans - CVE-2026-43502
net/rds: handle zerocopy send cleanup before the message is - CVE-2026-43501
ipv6: rpl: reserve mac_len headroom when recompressed SRH gr - CVE-2026-43498
accel/ivpu: Disallow re-exporting imported GEM objects
Same vendor: Linux
- CVE-2026-46300
net: skbuff: preserve shared-frag marker during coalescing - CVE-2026-43503
net: skbuff: propagate shared-frag marker through frag-trans - CVE-2026-43502
net/rds: handle zerocopy send cleanup before the message is - CVE-2026-43501
ipv6: rpl: reserve mac_len headroom when recompressed SRH gr - CVE-2026-43498
accel/ivpu: Disallow re-exporting imported GEM objects
V. Comments for CVE-2024-39508
No comments yet