CVE-2022-50219— bpf: Fix KASAN use-after-free Read in compute_effective_progs
Affected Version Matrix 12
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | af6eea57437a830293eab56246b6025cc7d46ee7< 3527e3cbb84d8868c4d4e91ba55915f96d39ec3d | affected |
af6eea57437a830293eab56246b6025cc7d46ee7< 1f8ca9c40e6222ce431e9ba5dae3cccce8ef9443 | affected | ||
af6eea57437a830293eab56246b6025cc7d46ee7< 6336388715afa419cc97d0255bda3bba1b96b7ca | affected | ||
af6eea57437a830293eab56246b6025cc7d46ee7< be001f9da71eaa3b61e186fb88bde3279728bdca | affected | ||
af6eea57437a830293eab56246b6025cc7d46ee7< 4c46091ee985ae84c60c5e95055d779fcd291d87 | affected | ||
5.7 | affected | ||
< 5.7 | unaffected | ||
5.10.138≤ 5.10.* | unaffected | ||
| … +4 more rows | |||
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I. Basic Information for CVE-2022-50219
Vulnerability Information
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Vulnerability Title
bpf: Fix KASAN use-after-free Read in compute_effective_progs
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: bpf: Fix KASAN use-after-free Read in compute_effective_progs Syzbot found a Use After Free bug in compute_effective_progs(). The reproducer creates a number of BPF links, and causes a fault injected alloc to fail, while calling bpf_link_detach on them. Link detach triggers the link to be freed by bpf_link_free(), which calls __cgroup_bpf_detach() and update_effective_progs(). If the memory allocation in this function fails, the function restores the pointer to the bpf_cgroup_link on the cgroup list, but the memory gets freed just after it returns. After this, every subsequent call to update_effective_progs() causes this already deallocated pointer to be dereferenced in prog_list_length(), and triggers KASAN UAF error. To fix this issue don't preserve the pointer to the prog or link in the list, but remove it and replace it with a dummy prog without shrinking the table. The subsequent call to __cgroup_bpf_detach() or __cgroup_bpf_detach() will correct it.
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compute_effective_progs中释放后重用，可能导致内存损坏。
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-2022-50219
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · Linux · 2025-06-18 · 362 CVEs total
| CVE-2022-50103 | sched, cpuset: Fix dl_cpu_busy() panic due to empty cs->cpus_allowed | |
| CVE-2022-50114 | net: 9p: fix refcount leak in p9_read_work() error handling | |
| CVE-2022-50113 | ASoc: audio-graph-card2: Fix refcount leak bug in __graph_get_type() | |
| CVE-2022-50112 | rpmsg: qcom_smd: Fix refcount leak in qcom_smd_parse_edge | |
| CVE-2022-50111 | ASoC: mt6359: Fix refcount leak bug | |
| CVE-2022-50110 | watchdog: sp5100_tco: Fix a memory leak of EFCH MMIO resource | |
| CVE-2022-50109 | video: fbdev: amba-clcd: Fix refcount leak bugs | |
| CVE-2022-50108 | mfd: max77620: Fix refcount leak in max77620_initialise_fps | |
| CVE-2022-50106 | powerpc/cell/axon_msi: Fix refcount leak in setup_msi_msg_address | |
| CVE-2022-50107 | cifs: Fix memory leak when using fscache | |
| CVE-2022-50105 | powerpc/spufs: Fix refcount leak in spufs_init_isolated_loader | |
| CVE-2022-50104 | powerpc/xive: Fix refcount leak in xive_get_max_prio | |
| CVE-2022-50098 | scsi: qla2xxx: Fix crash due to stale SRB access around I/O timeouts | |
| CVE-2022-50093 | iommu/vt-d: avoid invalid memory access via node_online(NUMA_NO_NODE) | |
| CVE-2022-50095 | posix-cpu-timers: Cleanup CPU timers before freeing them during exec | |
| CVE-2022-50094 | spmi: trace: fix stack-out-of-bound access in SPMI tracing functions | |
| CVE-2022-50096 | x86/kprobes: Update kcb status flag after singlestepping | |
| CVE-2022-50097 | video: fbdev: s3fb: Check the size of screen before memset_io() | |
| CVE-2022-50100 | sched/core: Do not requeue task on CPU excluded from cpus_mask | |
| CVE-2022-50102 | video: fbdev: arkfb: Fix a divide-by-zero bug in ark_set_pixclock() |
Showing top 20 of 362 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-2022-50219
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