diff options
Diffstat (limited to 'dev-db/redis/files/redis-7.0.5-cve-2022-3647.patch')
-rw-r--r-- | dev-db/redis/files/redis-7.0.5-cve-2022-3647.patch | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/dev-db/redis/files/redis-7.0.5-cve-2022-3647.patch b/dev-db/redis/files/redis-7.0.5-cve-2022-3647.patch new file mode 100644 index 000000000000..8f5eaff13fed --- /dev/null +++ b/dev-db/redis/files/redis-7.0.5-cve-2022-3647.patch @@ -0,0 +1,173 @@ +This is the patch recommended to apply in order to fix CVE-2022-3647. + +Upstream-commit: https://github.com/redis/redis/commit/0bf90d944313919eb8e63d3588bf63a367f020a3 +Bug: https://bugs.gentoo.org/877863 + +diff --git a/src/debug.c b/src/debug.c +index 8cc811be4..b15ac8780 100644 +--- a/src/debug.c ++++ b/src/debug.c +@@ -1123,73 +1123,88 @@ void bugReportStart(void) { + } + + #ifdef HAVE_BACKTRACE +-static void *getMcontextEip(ucontext_t *uc) { ++ ++/* Returns the current eip and set it to the given new value (if its not NULL) */ ++static void* getAndSetMcontextEip(ucontext_t *uc, void *eip) { + #define NOT_SUPPORTED() do {\ + UNUSED(uc);\ ++ UNUSED(eip);\ + return NULL;\ + } while(0) ++#define GET_SET_RETURN(target_var, new_val) do {\ ++ void *old_val = (void*)target_var; \ ++ if (new_val) { \ ++ void **temp = (void**)&target_var; \ ++ *temp = new_val; \ ++ } \ ++ return old_val; \ ++} while(0) + #if defined(__APPLE__) && !defined(MAC_OS_X_VERSION_10_6) + /* OSX < 10.6 */ + #if defined(__x86_64__) +- return (void*) uc->uc_mcontext->__ss.__rip; ++ GET_SET_RETURN(uc->uc_mcontext->__ss.__rip, eip); + #elif defined(__i386__) +- return (void*) uc->uc_mcontext->__ss.__eip; ++ GET_SET_RETURN(uc->uc_mcontext->__ss.__eip, eip); + #else +- return (void*) uc->uc_mcontext->__ss.__srr0; ++ GET_SET_RETURN(uc->uc_mcontext->__ss.__srr0, eip); + #endif + #elif defined(__APPLE__) && defined(MAC_OS_X_VERSION_10_6) + /* OSX >= 10.6 */ + #if defined(_STRUCT_X86_THREAD_STATE64) && !defined(__i386__) +- return (void*) uc->uc_mcontext->__ss.__rip; ++ GET_SET_RETURN(uc->uc_mcontext->__ss.__rip, eip); + #elif defined(__i386__) +- return (void*) uc->uc_mcontext->__ss.__eip; ++ GET_SET_RETURN(uc->uc_mcontext->__ss.__eip, eip); + #else + /* OSX ARM64 */ +- return (void*) arm_thread_state64_get_pc(uc->uc_mcontext->__ss); ++ void *old_val = (void*)arm_thread_state64_get_pc(uc->uc_mcontext->__ss); ++ if (eip) { ++ arm_thread_state64_set_pc_fptr(uc->uc_mcontext->__ss, eip); ++ } ++ return old_val; + #endif + #elif defined(__linux__) + /* Linux */ + #if defined(__i386__) || ((defined(__X86_64__) || defined(__x86_64__)) && defined(__ILP32__)) +- return (void*) uc->uc_mcontext.gregs[14]; /* Linux 32 */ ++ GET_SET_RETURN(uc->uc_mcontext.gregs[14], eip); + #elif defined(__X86_64__) || defined(__x86_64__) +- return (void*) uc->uc_mcontext.gregs[16]; /* Linux 64 */ ++ GET_SET_RETURN(uc->uc_mcontext.gregs[16], eip); + #elif defined(__ia64__) /* Linux IA64 */ +- return (void*) uc->uc_mcontext.sc_ip; ++ GET_SET_RETURN(uc->uc_mcontext.sc_ip, eip); + #elif defined(__arm__) /* Linux ARM */ +- return (void*) uc->uc_mcontext.arm_pc; ++ GET_SET_RETURN(uc->uc_mcontext.arm_pc, eip); + #elif defined(__aarch64__) /* Linux AArch64 */ +- return (void*) uc->uc_mcontext.pc; ++ GET_SET_RETURN(uc->uc_mcontext.pc, eip); + #else + NOT_SUPPORTED(); + #endif + #elif defined(__FreeBSD__) + /* FreeBSD */ + #if defined(__i386__) +- return (void*) uc->uc_mcontext.mc_eip; ++ GET_SET_RETURN(uc->uc_mcontext.mc_eip, eip); + #elif defined(__x86_64__) +- return (void*) uc->uc_mcontext.mc_rip; ++ GET_SET_RETURN(uc->uc_mcontext.mc_rip, eip); + #else + NOT_SUPPORTED(); + #endif + #elif defined(__OpenBSD__) + /* OpenBSD */ + #if defined(__i386__) +- return (void*) uc->sc_eip; ++ GET_SET_RETURN(uc->sc_eip, eip); + #elif defined(__x86_64__) +- return (void*) uc->sc_rip; ++ GET_SET_RETURN(uc->sc_rip, eip); + #else + NOT_SUPPORTED(); + #endif + #elif defined(__NetBSD__) + #if defined(__i386__) +- return (void*) uc->uc_mcontext.__gregs[_REG_EIP]; ++ GET_SET_RETURN(uc->uc_mcontext.__gregs[_REG_EIP], eip); + #elif defined(__x86_64__) +- return (void*) uc->uc_mcontext.__gregs[_REG_RIP]; ++ GET_SET_RETURN(uc->uc_mcontext.__gregs[_REG_RIP], eip); + #else + NOT_SUPPORTED(); + #endif + #elif defined(__DragonFly__) +- return (void*) uc->uc_mcontext.mc_rip; ++ GET_SET_RETURN(uc->uc_mcontext.mc_rip, eip); + #else + NOT_SUPPORTED(); + #endif +@@ -1951,6 +1966,10 @@ void dumpCodeAroundEIP(void *eip) { + } + } + ++void invalidFunctionWasCalled() {} ++ ++typedef void (*invalidFunctionWasCalledType)(); ++ + void sigsegvHandler(int sig, siginfo_t *info, void *secret) { + UNUSED(secret); + UNUSED(info); +@@ -1968,13 +1987,30 @@ void sigsegvHandler(int sig, siginfo_t *info, void *secret) { + + #ifdef HAVE_BACKTRACE + ucontext_t *uc = (ucontext_t*) secret; +- void *eip = getMcontextEip(uc); ++ void *eip = getAndSetMcontextEip(uc, NULL); + if (eip != NULL) { + serverLog(LL_WARNING, + "Crashed running the instruction at: %p", eip); + } + +- logStackTrace(getMcontextEip(uc), 1); ++ if (eip == info->si_addr) { ++ /* When eip matches the bad address, it's an indication that we crashed when calling a non-mapped ++ * function pointer. In that case the call to backtrace will crash trying to access that address and we ++ * won't get a crash report logged. Set it to a valid point to avoid that crash. */ ++ ++ /* This trick allow to avoid compiler warning */ ++ void *ptr; ++ invalidFunctionWasCalledType *ptr_ptr = (invalidFunctionWasCalledType*)&ptr; ++ *ptr_ptr = invalidFunctionWasCalled; ++ getAndSetMcontextEip(uc, ptr); ++ } ++ ++ logStackTrace(eip, 1); ++ ++ if (eip == info->si_addr) { ++ /* Restore old eip */ ++ getAndSetMcontextEip(uc, eip); ++ } + + logRegisters(uc); + #endif +@@ -2079,7 +2115,7 @@ void watchdogSignalHandler(int sig, siginfo_t *info, void *secret) { + + serverLogFromHandler(LL_WARNING,"\n--- WATCHDOG TIMER EXPIRED ---"); + #ifdef HAVE_BACKTRACE +- logStackTrace(getMcontextEip(uc), 1); ++ logStackTrace(getAndSetMcontextEip(uc, NULL), 1); + #else + serverLogFromHandler(LL_WARNING,"Sorry: no support for backtrace()."); + #endif +-- +2.37.4 + |