CVE-2024-56549— cachefiles: Fix NULL pointer dereference in object->file
Affected Version Matrix 12
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | c8383054506c77b814489c09877b5db83fd4abf2< d6bba3ece960129a553d4b16f1b00c884dc0993a | affected |
c8383054506c77b814489c09877b5db83fd4abf2< 785408bbafcfa24c9fc5b251f03fd0780ce182bd | affected | ||
c8383054506c77b814489c09877b5db83fd4abf2< f98770440c9bc468e2fd878212ec9526dbe08293 | affected | ||
c8383054506c77b814489c09877b5db83fd4abf2< 9582c7664103c9043e80a78f5c382aa6bdd67418 | affected | ||
c8383054506c77b814489c09877b5db83fd4abf2< 31ad74b20227ce6b40910ff78b1c604e42975cf1 | affected | ||
5.19 | affected | ||
< 5.19 | unaffected | ||
6.1.129≤ 6.1.* | unaffected | ||
| … +4 more rows | |||
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I. Basic Information for CVE-2024-56549
Vulnerability Information
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Vulnerability Title
cachefiles: Fix NULL pointer dereference in object->file
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: cachefiles: Fix NULL pointer dereference in object->file At present, the object->file has the NULL pointer dereference problem in ondemand-mode. The root cause is that the allocated fd and object->file lifetime are inconsistent, and the user-space invocation to anon_fd uses object->file. Following is the process that triggers the issue: [write fd] [umount] cachefiles_ondemand_fd_write_iter fscache_cookie_state_machine cachefiles_withdraw_cookie if (!file) return -ENOBUFS cachefiles_clean_up_object cachefiles_unmark_inode_in_use fput(object->file) object->file = NULL // file NULL pointer dereference! __cachefiles_write(..., file, ...) Fix this issue by add an additional reference count to the object->file before write/llseek, and decrement after it finished.
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net:mscc模块中ocelot_ifh_set_basic函数中SRC_PORT字段处理不当，可能导致内核崩溃。
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-2024-56549
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|---|
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Patch · 5
Same Patch Batch · Linux · 2024-12-27 · 221 CVEs total
| CVE-2024-56607 | wifi: ath12k: fix atomic calls in ath12k_mac_op_set_bitrate_mask() | |
| CVE-2024-56594 | drm/amdgpu: set the right AMDGPU sg segment limitation | |
| CVE-2024-56595 | jfs: add a check to prevent array-index-out-of-bounds in dbAdjTree | |
| CVE-2024-56596 | jfs: fix array-index-out-of-bounds in jfs_readdir | |
| CVE-2024-56597 | jfs: fix shift-out-of-bounds in dbSplit | |
| CVE-2024-56598 | jfs: array-index-out-of-bounds fix in dtReadFirst | |
| CVE-2024-56599 | wifi: ath10k: avoid NULL pointer error during sdio remove | |
| CVE-2024-56601 | net: inet: do not leave a dangling sk pointer in inet_create() | |
| CVE-2024-56600 | net: inet6: do not leave a dangling sk pointer in inet6_create() | |
| CVE-2024-56602 | net: ieee802154: do not leave a dangling sk pointer in ieee802154_create() | |
| CVE-2024-56603 | net: af_can: do not leave a dangling sk pointer in can_create() | |
| CVE-2024-56604 | Bluetooth: RFCOMM: avoid leaving dangling sk pointer in rfcomm_sock_alloc() | |
| CVE-2024-56605 | Bluetooth: L2CAP: do not leave dangling sk pointer on error in l2cap_sock_create() | |
| CVE-2024-56606 | af_packet: avoid erroring out after sock_init_data() in packet_create() | |
| CVE-2024-56618 | pmdomain: imx: gpcv2: Adjust delay after power up handshake | |
| CVE-2024-56615 | bpf: fix OOB devmap writes when deleting elements | |
| CVE-2024-56616 | drm/dp_mst: Fix MST sideband message body length check | |
| CVE-2024-56617 | cacheinfo: Allocate memory during CPU hotplug if not done from the primary CPU | |
| CVE-2024-56614 | xsk: fix OOB map writes when deleting elements | |
| CVE-2024-56619 | nilfs2: fix potential out-of-bounds memory access in nilfs_find_entry() |
Showing top 20 of 221 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- 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 - CVE-2026-43499
rtmutex: Use waiter::task instead of current in remove_waite - CVE-2026-43497
fbdev: udlfb: add vm_ops to dlfb_ops_mmap to prevent use-aft
Same vendor: Linux
- 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 - CVE-2026-43499
rtmutex: Use waiter::task instead of current in remove_waite - CVE-2026-43497
fbdev: udlfb: add vm_ops to dlfb_ops_mmap to prevent use-aft
V. Comments for CVE-2024-56549
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