CVE-2024-39495— greybus: Fix use-after-free bug in gb_interface_release due to race condition.
Affected Version Matrix 16
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 55742d2a071a569bf20f90d37b1b5b8a25a3f882< 74cd0a421896b2e07eafe7da4275302bfecef201 | affected |
55742d2a071a569bf20f90d37b1b5b8a25a3f882< 2b6bb0b4abfd79b8698ee161bb73c0936a2aaf83 | affected | ||
55742d2a071a569bf20f90d37b1b5b8a25a3f882< fb071f5c75d4b1c177824de74ee75f9dd34123b9 | affected | ||
55742d2a071a569bf20f90d37b1b5b8a25a3f882< 9a733d69a4a59c2d08620e6589d823c24be773dc | affected | ||
55742d2a071a569bf20f90d37b1b5b8a25a3f882< 0b8fba38bdfb848fac52e71270b2aa3538c996ea | affected | ||
55742d2a071a569bf20f90d37b1b5b8a25a3f882< 03ea2b129344152157418929f06726989efc0445 | affected | ||
55742d2a071a569bf20f90d37b1b5b8a25a3f882< 5c9c5d7f26acc2c669c1dcf57d1bb43ee99220ce | affected | ||
4.9 | affected | ||
| … +8 more rows | |||
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I. Basic Information for CVE-2024-39495
Vulnerability Information
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Vulnerability Title
greybus: Fix use-after-free bug in gb_interface_release due to race condition.
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: greybus: Fix use-after-free bug in gb_interface_release due to race condition. In gb_interface_create, &intf->mode_switch_completion is bound with gb_interface_mode_switch_work. Then it will be started by gb_interface_request_mode_switch. Here is the relevant code. if (!queue_work(system_long_wq, &intf->mode_switch_work)) { ... } If we call gb_interface_release to make cleanup, there may be an unfinished work. This function will call kfree to free the object "intf". However, if gb_interface_mode_switch_work is scheduled to run after kfree, it may cause use-after-free error as gb_interface_mode_switch_work will use the object "intf". The possible execution flow that may lead to the issue is as follows: CPU0 CPU1 | gb_interface_create | gb_interface_request_mode_switch gb_interface_release | kfree(intf) (free) | | gb_interface_mode_switch_work | mutex_lock(&intf->mutex) (use) Fix it by canceling the work before kfree.
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 greybus 组件在 gb_interface_release 函数中由于竞争条件问题，可能导致在释放对象后，仍有未完成的工作尝试访问已释放的对象，造成释放后重用错误。
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-2024-39495
| # | POC Description | Source Link | Shenlong Link |
|---|
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No public POC found.
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Same Patch Batch · Linux · 2024-07-12 · 122 CVEs total
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| 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-2026-43492
lib/crypto: mpi: Fix integer underflow in mpi_read_raw_from_ - CVE-2026-43493
crypto: pcrypt - Fix handling of MAY_BACKLOG requests - CVE-2026-43491
net: qrtr: ns: Limit the maximum server registration per nod - CVE-2026-46333
ptrace: slightly saner 'get_dumpable()' logic - CVE-2026-43490
ksmbd: validate inherited ACE SID length
Same vendor: Linux
- CVE-2026-43492
lib/crypto: mpi: Fix integer underflow in mpi_read_raw_from_ - CVE-2026-43493
crypto: pcrypt - Fix handling of MAY_BACKLOG requests - CVE-2026-43491
net: qrtr: ns: Limit the maximum server registration per nod - CVE-2026-46333
ptrace: slightly saner 'get_dumpable()' logic - CVE-2026-43490
ksmbd: validate inherited ACE SID length
V. Comments for CVE-2024-39495
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