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CVE-2021-47511— ALSA: pcm: oss: Fix negative period/buffer sizes

EPSS 0.01% · P1

Affected Version Matrix 18

VendorProductVersion RangeStatus
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< be8869d388593e57223ad39297c8e54be632f2f2affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 502e1146873d870f87da3b8f93d6bf2de5f38d0caffected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 8af815ab052eaf74addbbfb556d63ce2137c0e1baffected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< f96c0959c1ee92adc911c10d6ec209af50105049affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< f12c8a7515f641885677960af450082569a87243affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 02b2b691b77cd7b951fa7b6c9d44d4e472cdc823affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 00a860678098fcd9fa8db2b5fb9d2ddf4776d4ccaffected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 9d2479c960875ca1239bcb899f386970c13d9cfeaffected
… +10 more rows
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I. Basic Information for CVE-2021-47511

Vulnerability Information
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Vulnerability Title
ALSA: pcm: oss: Fix negative period/buffer sizes
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ALSA: pcm: oss: Fix negative period/buffer sizes The period size calculation in OSS layer may receive a negative value as an error, but the code there assumes only the positive values and handle them with size_t. Due to that, a too big value may be passed to the lower layers. This patch changes the code to handle with ssize_t and adds the proper error checks appropriately.
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OSS层中的周期大小计算允许是负值。
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

VendorProductAffected VersionsCPESubscribe
LinuxLinux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ~ be8869d388593e57223ad39297c8e54be632f2f2 -
LinuxLinux 2.6.12 -

II. Public POCs for CVE-2021-47511

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III. Intelligence Information for CVE-2021-47511

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Same Patch Batch · Linux · 2024-05-24 · 73 CVEs total

CVE-2021-47549sata_fsl: fix UAF in sata_fsl_port_stop when rmmod sata_fsl
CVE-2021-47569io_uring: fail cancellation for EXITING tasks
CVE-2021-47567powerpc/32: Fix hardlockup on vmap stack overflow
CVE-2021-47554vdpa_sim: avoid putting an uninitialized iova_domain
CVE-2021-47555net: vlan: fix underflow for the real_dev refcnt
CVE-2021-47553sched/scs: Reset task stack state in bringup_cpu()
CVE-2021-47551drm/amd/amdkfd: Fix kernel panic when reset failed and been triggered again
CVE-2021-47552blk-mq: cancel blk-mq dispatch work in both blk_cleanup_queue and disk_release()
CVE-2021-47550drm/amd/amdgpu: fix potential memleak
CVE-2021-47548ethernet: hisilicon: hns: hns_dsaf_misc: fix a possible array overflow in hns_dsaf_ge_srst
CVE-2021-47556ethtool: ioctl: fix potential NULL deref in ethtool_set_coalesce()
CVE-2021-47547net: tulip: de4x5: fix the problem that the array 'lp->phy[8]' may be out of bound
CVE-2021-47546ipv6: fix memory leak in fib6_rule_suppress
CVE-2021-47544tcp: fix page frag corruption on page fault
CVE-2021-47542net: qlogic: qlcnic: Fix a NULL pointer dereference in qlcnic_83xx_add_rings()
CVE-2021-47541net/mlx4_en: Fix an use-after-free bug in mlx4_en_try_alloc_resources()
CVE-2021-47540mt76: mt7915: fix NULL pointer dereference in mt7915_get_phy_mode
CVE-2021-47539rxrpc: Fix rxrpc_peer leak in rxrpc_look_up_bundle()
CVE-2021-47538rxrpc: Fix rxrpc_local leak in rxrpc_lookup_peer()
CVE-2021-47536net/smc: fix wrong list_del in smc_lgr_cleanup_early

Showing top 20 of 73 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2021-47511

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